Prepare for advanced Java with this course on Intermediate Java programming https://aleftavtraining.siterubix.com/

1. Java for Intermediate Users
Prepare for advanced Java

2. Build on programming basics, by using
the world’s most popular language to:
• Maintain your advantage
• Refine your skills
• Write functional code
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Marius Claassen,
Java Intermediate

3. About me
Marius Claassen, Java Developer and Teacher
I am a self-taught Java developer. Having been a teacher for many
years, I am now working full-time as an independent Java instructor,
making video tutorials. It is my mission to help others learn
programming in general and Java in particular.
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Marius Claassen,
Java Intermediate

4. Benefits
• Read Java code
• Develop useful Java applications
• Devise Java solutions when given a
problem statement
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Marius Claassen,
Java Intermediate

5. Major components
1. Introduction
2. Java data types
3. Library classes
4. Java classes
5. Lambdas and Streams
6. JavaFX
7. Conclusion
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Marius Claassen,
Java Intermediate

6. Lecture outline
• 51 Lectures
• 5 minutes
1. Coding exercise
2. Lecture description
3. PDF
4. Video
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Marius Claassen,
Java Intermediate

7. Ideal student
* Completed Java beginner course
* You want to improve your skills by:
• watching live coding
• doing coding exercises
• checking answers against solutions
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Marius Claassen,
Java Intermediate

8. Enrolment
30-day money back guarantee
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Marius Claassen,
Java Intermediate

9. To get details about this course:
• mariusclaassen@gmail.com
or
• https://www.udemy.com/course/1133518/manage/basics/
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Marius Claassen,
Java Intermediate

10. TOPICS
1. Introduction
2. Java data types
3. Library classes
4. Java classes
5. Lambdas and Streams
6. JavaFX
7. Conclusion
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Marius Claassen,
Java Intermediate

11. Lecture 2: Development tools
• JDK (SE 8 or SE 9)
http://www.oracle.com/technetwork/java/javase/downloads/index.html
• IDE (IntelliJ IDEA)
https://www.jetbrains.com/idea/
• Internet browser (Google Chrome)
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Marius Claassen,
Java Intermediate

19. 19

20. 20

21. 21

22. 22
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Java Intermediate

23. 23

24. 24
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Java Intermediate

25. 25

26. 26

27. 27 Marius Claassen, 2017

28. 28

29. 29

30. 30

31. 31

32. 32

33. 33

34. 34

35. 35

36. 36

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38. 38

39. 39

40. 40

41. 41

42. 42

43. 43

44. 44

45. 45

46. 46

47. 47

48. 48

49. TOPICS
1. Introduction
2. Java data types
3. Library classes
4. Java classes
5. Lambdas and Streams
6. JavaFX
7. Conclusion
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Marius Claassen,
Java Intermediate

50. Lecture 3: Numeric types example
Numeric types problem statement:
Print the numeric data types int and float with
their names and values
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Marius Claassen,
Java Intermediate

51. Lecture 3: Numeric types example
public class Lecture3 {
public static void main(String[] args) {
int intNumber = 308_000;
float floatNumber = 9_000f;
System.out.print(“intNumber: ” + intNumber);
System.out.print(“tfloatNumber: ” + floatNumber);
}
} // intNumber: 308000 floatNumber: 9000.0
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Marius Claassen,
Java Intermediate

52. Lecture 3: Numeric types exercise
Print the numeric data type long initialized as
6 000 000
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Marius Claassen,
Java Intermediate

53. Lecture 3: Numeric types exercise
public class Lecture4 {
public static void main(String[] args) {
long longNumber = 6_000_000;
// TODO: Print the name and value of ‘longNumber’
}
}
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Marius Claassen,
Java Intermediate

54. Lecture 4: Numeric types solution
public class Lecture4 {
public static void main(String[] args) {
long longNumber = 6_000_000;
System.out.print(“longNumber: ” + longNumber);
}
} // longNumber: 6000000
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Marius Claassen,
Java Intermediate

55. Lecture 5: Textual type example
Textual types problem statement:
Implement the textual data type ‘String’ and
print its name and value
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Marius Claassen,
Java Intermediate

56. Lecture 5: Textual type example
public class Lecture5 {
public static void main(String[] args) {
String string = “Java is everywhere.”;
System.out.print(“Text: ” + string);
}
} // Text: Java is everywhere.
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Marius Claassen,
Java Intermediate

57. Lecture 5: Textual type exercise
Print the textual data type ‘String’ initialized
as ‘Java continues to dominate.’
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Marius Claassen,
Java Intermediate

58. Lecture 5: Textual type exercise
public class Lecture6 {
public static void main(String[] args) {
String myString = “Java continues to dominate.”;
// TODO: Print the name and value of ‘myString’
}
}
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Marius Claassen,
Java Intermediate

59. Lecture 6: Textual type solution
public class Lecture6 {
public static void main(String[] args) {
String myString = “Java continues to dominate.”;
System.out.print(“myString: ” + myString);
}
} // myString: Java continues to dominate.
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Marius Claassen,
Java Intermediate

60. Lecture 7: Convert types example
Converting types problem statement:
Convert a String to a float and a double to a
String
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Marius Claassen,
Java Intermediate

61. Lecture 7: Convert types example
public class Lecture7 {
public static void main(String[] args) {
String stringText = “7.7”;
float floatNumber = Float.parseFloat(stringText);
System.out.print(“String to float: ” + floatNumber);
double doubleNumber = 200;
String text1 = Double.toString(doubleNumber);
System.out.print(“ndouble to String: ” + text1); } }
// String to float: 7.7
// double to String: 200.0
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Marius Claassen,
Java Intermediate

62. Lecture 7: Convert types exercise
Convert an int to a String named ‘text’
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Marius Claassen,
Java Intermediate

63. Lecture 7: Convert types exercise
public class Lecture8 {
public static void main(String[] args) {
int value = 1_000;
// TODO: Convert int ‘value’ to a String ‘text’
System.out.print(“int to String: ” + text);
}
}
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Marius Claassen,
Java Intermediate

64. Lecture 8: Convert types solution
public class Lecture8 {
public static void main(String[] args) {
int value = 1_000;
String text = Integer.toString(value);
System.out.print(“int to String: ” + text);
}
} // int to String: 1000
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Marius Claassen,
Java Intermediate

65. Lecture 9: Keyboard input example
Keyboard input problem statement:
Implement keyboard input to print the name
of the world’s largest economy
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Marius Claassen,
Java Intermediate

66. Lecture 9: Keyboard input example
public class Lecture9 {
public static void main(String[] args) {
System.out.print(“Name the world’s largest economy ”);
Scanner scanner = new Scanner(System.in);
String largestEconomy = scanner.next;
System.out.print(largestEconomy+“ has the largest economy.”);}}
// Name the world’s largest economy ***?
// USA has the largest economy.
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Marius Claassen,
Java Intermediate

67. Lecture 9: Keyboard input exercise
Create a Scanner object named ‘scanner1’
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Marius Claassen,
Java Intermediate

68. Lecture 9: Keyboard input exercise
public class Lecture10 {
public static void main(String[] args) {
System.out.print(“Name the world’s most populous country ”);
// TODO: Create a Scanner object named ‘scanner1’
String largestPopulation = scanner1.next;
System.out.print(largestPopulation+“ has the largest population”); } }
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Marius Claassen,
Java Intermediate

69. Lecture 10: Keyboard input solution
public class Lecture10 {
public static void main(String[] args) {
System.out.print(“Name the world’s most populous country ”);
Scanner scanner1 = new Scanner(System.in);
String largestPopulation = scanner1.next;
System.out.print(largestPopulation+“ has the largest population”); } }
// Name the world’s most populous country ***?
// China has the largest population
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Marius Claassen,
Java Intermediate

70. TOPICS
1. Introduction
2. Java data types
3. Library classes
4. Java classes
5. Lambdas and Streams
6. JavaFX
7. Conclusion
Marius Claassen,
Java Intermediate

71. Lecture 11: Import example
Import problem statement:
Implement import statements for the
‘LocalDate’ and ‘Month’ classes
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Marius Claassen,
Java Intermediate

72. Lecture 11: Import example
import java.time.LocalDate;
import java.time.Month;
public class Lecture11 {
public static void main(String[] args) {
LocalDate jdk1Release = LocalDate.of(1996, Month.JANUARY, 21);
System.out.print(“JDK 1.0 release date: ” + jdk1Release); } }
// JDK 1.0 release date: 1996-01-21
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Marius Claassen,
Java Intermediate

73. Lecture 11: Import exercise
Implement an import statement for the
‘LocalDate’ class
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Marius Claassen,
Java Intermediate

74. Lecture 11: Import exercise
// TODO: Import the ‘LocalDate’ class
import java.time.Month;
public class Lecture12 {
public static void main(String[] args) {
LocalDate jdk9ReleaseDate
= LocalDate.of(2017, Month. SEPTEMBER, 21);
System.out.print(“JDK SE 9 release date: ” + jdk9ReleaseDate); } }
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Marius Claassen,
Java Intermediate

75. Lecture 12: Import solution
import java.time.LocalDate;
import java.time.Month;
public class Lecture12 {
public static void main(String[] args) {
LocalDate jdk9ReleaseDate
= LocalDate.of(2017, Month. SEPTEMBER, 21);
System.out.print(“JDK SE 9 release date: ” + jdk9ReleaseDate); } }
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Marius Claassen,
Java Intermediate

76. Lecture 13: Package example
Package statement problem statement:
Implement the package statement ‘courses’
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Marius Claassen,
Java Intermediate

77. Lecture 13: Package example
package courses;
public class Lecture13 {
public static void main(String[] args) {
BeginnerJava beginnerJava = new BeginnerJava();
beginnerJava.printBeginnerJava();
IntermediateJava intermediateJava = new IntermediateJava();
intermediateJava.printIntermediateJava(); } }
// Java Beginner course published
// Java Intermediate course completed
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Marius Claassen,
Java Intermediate

78. package courses;
public class BeginnerJava {
public void printBeginnerJava() {
System.out.print(“Java Beginner course published”);
}
}
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Marius Claassen,
Java Intermediate

79. package courses;
public class IntermediateJava {
public void printIntermediateJava() {
System.out.print(“nJava Intermediate course completed”);
}
}
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Marius Claassen,
Java Intermediate

80. Lecture 13: Package exercise
Implement the package statement
‘intermediatejava’
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Marius Claassen,
Java Intermediate

81. Lecture 13: Package exercise
// TODO: Implement the package statement ‘intermediatejava’
public class Lecture14 {
public static void main(String[] args) {
Introduction introduction = new Introduction();
introduction.printIntroduction();
Contents contents = new Contents();
contents.printContents(); } }
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Marius Claassen,
Java Intermediate

82. // TODO: Implement the package statement ‘intermediatejava’
public class Introduction {
public void printIntroduction() {
System.out.print(“Introduction completed, ”);
}
}
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Marius Claassen,
Java Intermediate

83. // TODO: Implement the package statement ‘intermediatejava’
public class Contents {
public void printContents() {
System.out.print(“Contents started”);
}
}
83
Marius Claassen,
Java Intermediate

84. Lecture 14: Package solution
package intermediatejava;
public class Lecture14 {
public static void main(String[] args) {
Introduction introduction = new Introduction();
introduction.printIntroduction();
Contents contents = new Contents();
contents.printContents(); } }
// Introduction completed, Contents started
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Marius Claassen,
Java Intermediate

85. package intermediatejava;
public class Introduction {
public void printIntroduction() {
System.out.print(“Introduction completed, ”);
}
}
85
Marius Claassen,
Java Intermediate

86. package intermediatejava;
public class Contents {
public void printContents() {
System.out.print(“Contents started”);
}
}
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Marius Claassen,
Java Intermediate

87. Lecture 15: String class example
String class problem statement:
Declare a String named ‘businessName’
87
Marius Claassen,
Java Intermediate

88. Lecture 15: String class example
public class Lecture15 {
public static void main(String[] args) {
String businessName = “AlefTav Coding”;
System.out.print(“My business is named ” + businessName);
}
}
// My business is named AlefTav Coding
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Marius Claassen,
Java Intermediate

89. Lecture 15: String class exercise
Declare a String, ‘courseTitle’ initialized as
‘Java for Intermediate Users’
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Marius Claassen,
Java Intermediate

90. Lecture 15: String class exercise
public class Lecture16 {
public static void main(String[] args) {
// TODO: Declare a String, ‘courseTitle’ initialized as ‘Java for
// Intermediate Users’
System.out.print(“The title of this course: ” + courseTitle);
}
}
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Marius Claassen,
Java Intermediate

91. Lecture 16: String class solution
public class Lecture16 {
public static void main(String[] args) {
String courseTitle = “Java for Intermediate Users”;
System.out.print(“The title of this course is ” + courseTitle);
}
}
// The title of this course is Java for Intermediate Users
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Marius Claassen,
Java Intermediate

92. Lecture 17: Random class example
Random class problem statement:
Generate 4 random integers between 1 and
600, with a seed value of 3
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Marius Claassen,
Java Intermediate

93. Lecture 17: Random class example
public class Lecture17 {
public static void main(String[] args) {
Random random = new Random(3);
System.out.print(“Four random integers between 1 and 600: ”);
for (int i = 0; i < 4; i++) { System.out.print(random.nextInt(600) + “ ”); }
}
}
// Four random integers between 1 and 600: 134 260 210 181
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Marius Claassen,
Java Intermediate

94. Lecture 17: Random class exercise
Implement an object named ‘random’ with
seed value 9
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Marius Claassen,
Java Intermediate

95. Lecture 17: Random class exercise
public class Lecture18 {
public static void main(String[] args) {
// TODO: Implement an object named, ‘random’ with seed value 9
System.out.print(“Five random integers between 1 and 200: ”);
for (int i = 0; i < 5; i++) { System.out.print(random.nextInt(200) + “ ”); }
}
}
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Marius Claassen,
Java Intermediate

96. Lecture 17: Random class exercise
Implement an object named ‘random’ with
seed value 9
96
Marius Claassen,
Java Intermediate

97. Lecture 17: Random class exercise
public class Lecture18 {
public static void main(String[] args) {
// TODO: Implement an object named, ‘random’ with seed value 9
System.out.print(“Five random integers between 1 and 200: ”);
for (int i = 0; i < 5; i++) { System.out.print(random.nextInt(200) + “ ”); }
}
}
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Marius Claassen,
Java Intermediate

98. Lecture 18: Random class solution
public class Lecture18 {
public static void main(String[] args) {
Random random = new Random(9);
System.out.print(“Five random integers between 1 and 200: ”);
for (int i = 0; i < 5; i++) { System.out.print(random.nextInt(200) + “ ”); }
}
}
// Five random integers between 1 and 200: 189 196 148 135 159
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Marius Claassen,
Java Intermediate

99. Lecture 19: Math class example
Math class problem statement:
Print the answer to ‘baseValue’ 15.6, raised
to ‘powerValue’ 4.7
99
Marius Claassen,
Java Intermediate

100. Lecture 19: Math class example
public class Lecture19 {
public static void main(String[] args) {
double baseValue = 15.6;
double powerValue = 4.7;
System.out.printf(“15.6⁴˙⁷: %.3f” + Math.pow(baseValue, powerValue));
}
}
// 405215.092
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Marius Claassen,
Java Intermediate

101. Lecture 19: Math class exercise
Print to four decimal places the square root
of 1511
101
Marius Claassen,
Java Intermediate

102. Lecture 19: Math class exercise
public class Lecture20 {
public static void main(String[] args) {
double x = 1511;
// TODO: Print to 4 decimal places the square root of 1511
}
}
102
Marius Claassen,
Java Intermediate

103. Lecture 20: Math class solution
public class Lecture20 {
public static void main(String[] args) {
double x = 1511;
System.out.printf(“%.4f”, Math.sqrt(x));
}
}
// 38.8716
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Marius Claassen,
Java Intermediate

104. TOPICS
1. Introduction
2. Java data types
3. Library classes
4. Java classes
5. Lambdas and Streams
6. JavaFX
7. Conclusion
104
Marius Claassen,
Java Intermediate

105. Lecture 21: Java class example
Java class problem statement:
Implement a class named ‘Dog’
105
Marius Claassen,
Java Intermediate

106. Lecture 21: Java class example
public class Lecture21 {
public static void main(String[] args) {
Dog dog1 = new Dog();
dog1.getName();
}
}
// The dog’s name is ‘Faithful’.
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Marius Claassen,
Java Intermediate

107. public class Dog {
public void getName() {
System.out.print(“The dog’s name is ‘Faithful’.” );
}
}
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Marius Claassen,
Java Intermediate

108. Lecture 21: Java class exercise
Implement a class named ‘Person’
108
Marius Claassen,
Java Intermediate

109. Lecture 21: Java class exercise
public class Lecture22 {
public static void main(String[] args) {
Person person1 = new Person();
person1.saySomething();
}
}
109
Marius Claassen,
Java Intermediate

110. // TODO: Implement a class named ‘Person’
{
public void saySomething() {
System.out.print(“I am a person.” );
}
}
110
Marius Claassen,
Java Intermediate

111. Lecture 22: Java class solution
public class Lecture22 {
public static void main(String[] args) {
Person person1 = new Person();
person1.saySomething();
}
}
// I am a person.
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Marius Claassen,
Java Intermediate

112. public class Person
{
public void saySomething() {
System.out.print(“I am a person.” );
}
}
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Marius Claassen,
Java Intermediate

113. Lecture 23: Java Object example
Instantiate an object problem statement:
Instantiate an object named ‘mobilePhone’
113
Marius Claassen,
Java Intermediate

114. Lecture 23: Java Object example
public class Lecture23 {
public static void main(String[] args) {
MobilePhone mobilePhone = new MobilePhone();
mobilePhone.getName();
}
}
// Samsung or iPhone
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Marius Claassen,
Java Intermediate

115. public class MobilePhone {
public void getName() {
System.out.print(“Samsung or iPhone” );
}
}
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Marius Claassen,
Java Intermediate

116. Lecture 23: Java Object exercise
Instantiate an object named ‘person’
116
Marius Claassen,
Java Intermediate

117. Lecture 23: Java Object exercise
public class Lecture24 {
public static void main(String[] args) {
// TODO: Instantiate an object named ‘person’
person.speak();
}
}
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Marius Claassen,
Java Intermediate

118. public class Person {
public void speak() {
System.out.print(“What a wonderful world!” );
}
}
118
Marius Claassen,
Java Intermediate

119. Lecture 24: Java Object solution
public class Lecture24 {
public static void main(String[] args) {
Person person = new Person();
person.speak();
}
}
// What a wonderful world!
119
Marius Claassen,
Java Intermediate

120. public class Person {
public void speak() {
System.out.print(“What a wonderful world!” );
}
}
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Marius Claassen,
Java Intermediate

121. Lecture 25: Constructor example
Constructor problem statement:
Implement the constructor of the class
‘MobilePhone’
121
Marius Claassen,
Java Intermediate

122. Lecture 25: Constructor example
public class Lecture25 {
public static void main(String[] args) {
MobilePhone mobilePhone = new MobilePhone(“Samsung”, 100);
}
}
// NAME: Samsung
// PRICE: $100.00
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Marius Claassen,
Java Intermediate

123. public class MobilePhone {
String name;
double price;
public MobilePhone(String newName, double newPrice) { // constructor
name = newName;
price = newPrice;
System.out.printf(“NAME: %snPRICE: $%.2f”, name, price);
}
}
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Marius Claassen,
Java Intermediate

124. Lecture 25: Constructor exercise
Implement the constructor of the ‘Person’
class
124
Marius Claassen,
Java Intermediate

125. Lecture 25: Constructor exercise
public class Lecture26 {
public static void main(String[] args) {
Person person = new Person(“Sarah”, 50);
}
}
125
Marius Claassen,
Java Intermediate

126. public class Person {
String name;
int age;
// TODO: Implement the constructor of the ‘Person’ class
{
name = newName;
age = newAge;
System.out.print(“NAME: ” + name + “, ” + “AGE: ” + age); } }
126
Marius Claassen,
Java Intermediate

127. Lecture 26: Constructor solution
public class Lecture26 {
public static void main(String[] args) {
Person person = new Person(“Sarah”, 50);
}
}
// NAME: Sarah , AGE: 50
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Marius Claassen,
Java Intermediate

128. public class Person {
String name;
int age;
public Person(String newName, int newAge)
{
name = newName;
age = newAge;
System.out.print(“NAME: ” + name + “, ” + “AGE: ” + age); } }
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Marius Claassen,
Java Intermediate

129. Lecture 27: Encapsulation example
Encapsulation problem statement:
Declare a private field ‘price’ and implement
a public method ‘setPrice’ with one
parameter ‘newPrice’
129
Marius Claassen,
Java Intermediate

130. Lecture 27: Encapsulation example
public class Lecture27 {
public static void main(String[] args) {
MobilePhone mobilePhone = new MobilePhone(300);
}
}
// Mobile phone price: $300.00
130
Marius Claassen,
Java Intermediate

131. public class MobilePhone {
private double price;
public void setPrice(double newPrice) {
price = newPrice;
System.out.printf(“Mobile phone price: $%.2f”, price);
}
}
131
Marius Claassen,
Java Intermediate

132. Lecture 27: Encapsulation exercise
Declare a private field ‘name’ and implement
a public method ‘setName’ with one
parameter ‘newName’
132
Marius Claassen,
Java Intermediate

133. Lecture 27: Encapsulation exercise
public class Lecture28 {
public static void main(String[] args) {
Person person = new Person();
person.setName(“David”);
}
}
133
Marius Claassen,
Java Intermediate

134. public class Person {
// TODO: Declare a private field ‘name’
// TODO: Implement a public method ‘setName’ with one parameter
// ‘newName’
{
name = newName;
System.out.printf(“NAME: %s”, name); } }
134
Marius Claassen,
Java Intermediate

135. Lecture 28: Encapsulation solution
public class Lecture28 {
public static void main(String[] args) {
Person person = new Person();
person.setName(“David”);
}
}
// NAME: David
135
Marius Claassen,
Java Intermediate

136. public class Person {
private String name;
public void setName(String newName)
{
name = newName;
System.out.printf(“NAME: %s”, name); } }
136
Marius Claassen,
Java Intermediate

137. Lecture 29: ArrayList example
ArrayList problem statement:
Implement an ArrayList of type String, named
‘planets’
137
Marius Claassen,
Java Intermediate

138. Lecture 29: ArrayList example
public class Lecture29 {
public static void main(String[] args) {
ArrayList<String> planets = new ArrayList<>();
planets.add(“Mercury”);
planets.add(“Venus”);
planets.add(“Earth”);
planets.add(“Mars”);
for (String planet : planets) { System.out.print(planet + “ ”); } } }
// Mercury Venus Earth Mars
138
Marius Claassen,
Java Intermediate

139. Lecture 29: ArrayList exercise
Implement an ArrayList of type String, named
‘currencies’
139
Marius Claassen,
Java Intermediate

140. Lecture 29: ArrayList exercise
public class Lecture30 {
public static void main(String[] args) {
// TODO: Implement an ArrayList of type String , named ‘currencies’
currencies.add(“US Dollar”);
currencies.add(“Indian Rupee”);
currencies.add(“Thai Baht”);
for (String currency : currencies) { System.out.print(currency + “ ”); } } }
140
Marius Claassen,
Java Intermediate

141. Lecture 30: ArrayList solution
public class Lecture30 {
public static void main(String[] args) {
ArrayList<String> currencies = new ArrayList<>();
currencies.add(“US Dollar”);
currencies.add(“Indian Rupee”);
currencies.add(“Thai Baht”);
for (String currency : currencies) { System.out.print(currency + “ ”); } } }
// US Dollar Indian Rupee Thai Baht
141
Marius Claassen,
Java Intermediate

142. Lecture 31: Debugging example
Debugging problem statement:
Implement debugging to handle the
exception, StackOverflowError
142
Marius Claassen,
Java Intermediate

143. Lecture 31: Debugging example
public class Lecture31 {
public static void main(String[] args) {
int y = 8;
System.out.print(“Fibonacci value at index ” + y + “: ” + getFibonacci(y));
}
143
Marius Claassen,
Java Intermediate

144. private static long getFibonacci(int x) {
return x <= 2 ? 1 : getFibonacci(x - 1) + getFibonacci(x - 2) ;
}
}
// Fibonacci value at index 8: 21
144
Marius Claassen,
Java Intermediate

145. Lecture 31: Debugging exercise
Implement debugging to handle the
exception, StackOverflowError
145
Marius Claassen,
Java Intermediate

146. Lecture 31: Debugging exercise
public class Lecture32 {
public static void main(String[] args) {
int y = 10;
System.out.print(“Fibonacci value at index ” + y + “: ” + getFibonacci(y));
}
146
Marius Claassen,
Java Intermediate

147. private static long getFibonacci(int x) {
// TODO: Implement debugging to handle the exception,
// StackOverflowError
return getFibonacci(x - 1) + getFibonacci(x - 2);
}
}
147
Marius Claassen,
Java Intermediate

148. Lecture 32: Debugging solution
public class Lecture32 {
public static void main(String[] args) {
int y = 10;
System.out.print(“Fibonacci value at index ” + y + “: ” + getFibonacci(y));
}
148
Marius Claassen,
Java Intermediate

149. private static long getFibonacci(int x) {
return x <= 2 ? 1 : getFibonacci(x - 1) + getFibonacci(x - 2) ;
}
}
// Fibonacci value at index 10: 55
149
Marius Claassen,
Java Intermediate

150. TOPICS
1. Introduction
2. Java data types
3. Library classes
4. Java classes
5. Lambdas and Streams
6. JavaFX
7. Conclusion
150
Marius Claassen,
Java Intermediate

151. Lecture 33: Lambda Part 1 example
Lambda part 1 problem statement:
Implement a lambda expression to print
‘Hello, lambda’
151
Marius Claassen,
Java Intermediate

152. Lecture 33: Lambda Part 1 example
public class Lecture33 {
public static void main(String[] args) {
Thread thread1 = new Thread( () -> System.out.print(“Hello, lambda”); )
thread1.run();
}
}
// Hello, lambda
152
Marius Claassen,
Java Intermediate

153. Lecture 33: Lambda Part 1 exercise
Implement a lambda object named ‘thread’ to
print ‘My first lambda’
153
Marius Claassen,
Java Intermediate

154. Lecture 33: Lambda Part 1 exercise
public class Lecture34 {
public static void main(String[] args) {
// TODO: Implement a lambda object named ‘thread’ to print,
// ‘My first lambda’
thread.run();
}
}
154
Marius Claassen,
Java Intermediate

155. Lecture 34: Lambda Part 1 solution
public class Lecture34 {
public static void main(String[] args) {
Thread thread = new Thread( () -> System.out.print(“My first lambda”); )
thread.run();
}
}
// My first lambda
155
Marius Claassen,
Java Intermediate

156. Lecture 35: Lambda Part 2 example
Lambda Part 2 problem statement:
Implement a lambda to remove even numbers
from a list
156
Marius Claassen,
Java Intermediate

157. Lecture 35: Lambda Part 2 example
import java.util.ArrayList; import java.util.Arrays;
public class Lecture35 {
public static void main(String[] args) {
ArrayList<Integer> values = new ArrayList<>(Arrays.asList(
1, 2, 3, 4, 5, 6, 7) );
values.removeIf(i -> i % 2 == 0);
values.forEach(i -> System.out.print(i + “ ”) ); } }
// 1 3 5 7
157
Marius Claassen,
Java Intermediate

158. Lecture 35: Lambda Part 2 exercise
Implement a lambda to remove odd numbers
from a list
158
Marius Claassen,
Java Intermediate

159. Lecture 35: Lambda Part 2 exercise
import java.util.ArrayList; import java.util.Arrays;
public class Lecture36 {
public static void main(String[] args) {
ArrayList<Integer> numbers = new ArrayList<>(Arrays.asList(
5, 6, 7, 8, 9, 10) );
// TODO: Implement a lambda to remove odd numbers from a list
numbers.forEach(i -> System.out.print(i + “ ”) ); } }
159
Marius Claassen,
Java Intermediate

160. Lecture 36: Lambda Part 2 solution
import java.util.ArrayList; import java.util.Arrays;
public class Lecture36 {
public static void main(String[] args) {
ArrayList<Integer> numbers = new ArrayList<>(Arrays.asList(
5, 6, 7, 8, 9, 10) );
numbers.removeIf(i -> i % 2 != 0);
numbers.forEach(i -> System.out.print(i + “ ”) ); } }
// 6 8 10
160
Marius Claassen,
Java Intermediate

161. Lecture 37: Streams Part 1 example
Streams Part 1 problem statement:
Implement the stream() to print words in
alphabetical order
161
Marius Claassen,
Java Intermediate

162. Lecture 37: Streams Part 1 example
import java.util.ArrayList; import java.util.Arrays; import java.util.Comparator;
public class Lecture37 {
public static void main(String[] args) {
ArrayList<String> cities = new ArrayList<>(Arrays.asList(“Mumbai”,
“Karachi”, “Los Angeles”, “Nonthaburi City”, “Kolkata”, “New York”) );
cities.stream().sorted(Comparator.naturalOrder())
.forEach(s -> System.out.print(s + “ ”) ); } }
// Karachi Kolkata Los Angeles Mumbai New York Nonthaburi City
162
Marius Claassen,
Java Intermediate

163. Lecture 37: Streams Part1 exercise
Implement the stream() to print words in
reverse order
163
Marius Claassen,
Java Intermediate

164. Lecture 37: Streams Part1 exercise
import java.util.ArrayList; import java.util.Arrays; import java.util.Comparator;
public class Lecture38 {
public static void main(String[] args) {
ArrayList<String> capitalCities = new ArrayList<>(Arrays.asList(
“Delhi”, “Islamabad”, “Bangkok”, “Washington”, “Jakarta”) );
// TODO: Implement the stream()
// TODO: to print words
// TODO: in reverse order
} }
164
Marius Claassen,
Java Intermediate

165. Lecture 38: Streams Part 1 solution
import java.util.ArrayList; import java.util.Arrays; import java.util.Comparator;
public class Lecture38 {
public static void main(String[] args) {
ArrayList<String> capitalCities = new ArrayList<>(Arrays.asList(
“Delhi”, “Islamabad”, “Bangkok”, “Washington”, “Jakarta”) );
capitalCities.stream().sorted(Comparator.reverseOrder())
.forEach(s -> System.out.print(s + “ ”) ); } }
// Washington Jakarta Islamabad Delhi Bangkok
165
Marius Claassen,
Java Intermediate

166. Lecture 39: Streams Part 2 example
Streams Part 2 problem statement:
Implement the stream() to print an int using
the filter, map, reduce pattern
166
Marius Claassen,
Java Intermediate

167. Lecture 39: Streams Part 2 example
import java.util.ArrayList; import java.util.Arrays;
public class Lecture39 {
public static void main(String[] args) {
ArrayList<Integer> numbers = new ArrayList<>(Arrays.asList(
6, 7, 8, 9) );
int sum = numbers.stream().filter(i -> i < 8).map(e -> e * 3)
.reduce(0, (partAnswer, y) -> partAnswer + y);
System.out.print(sum); } }
// 39
167
Marius Claassen,
Java Intermediate

168. Lecture 39: Streams Part2 exercise
Implement the stream() to print an int using
the filter, map, reduce pattern
168
Marius Claassen,
Java Intermediate

169. Lecture 39: Streams Part2 exercise
import java.util.ArrayList; import java.util.Arrays;
public class Lecture40 {
public static void main(String[] args) {
ArrayList<Integer> values = new ArrayList<>(Arrays.asList(
1, 2, 3, 4, 5) );
// TODO: Square each value larger than 3 and get their sum
// TODO:
// TODO:
System.out.print(sum); } }
169
Marius Claassen,
Java Intermediate

170. Lecture 40: Streams Part 2 solution
import java.util.ArrayList; import java.util.Arrays;
public class Lecture40 {
public static void main(String[] args) {
ArrayList<Integer> values = new ArrayList<>(Arrays.asList(
1, 2, 3, 4, 5) );
int sum = values.stream().filter(i -> i > 3).map(e -> e * e)
.reduce(0, (partAnswer, y) -> partAnswer + y);
System.out.print(sum); } }
// 41
170
Marius Claassen,
Java Intermediate

171. TOPICS
1. Introduction
2. Java data types
3. Library classes
4. Java classes
5. Lambdas and Streams
6. JavaFX
7. Conclusion
Marius Claassen,
Java Intermediate

172. Lecture 41: JavaFX Colors example
JavaFX colors problem statement:
Implement the ColorPicker class to display
colours and their web # values
172
Marius Claassen,
Java Intermediate

173. Lecture 41: JavaFX Colors example
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.ColorPicker;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;
173
Marius Claassen,
Java Intermediate

174. public class Lecture41 extends Application {
@Override public void start(Stage stage) {
ColorPicker colorPicker1 = new ColorPicker();
colorPicker1.setOnAction(event -> colorPicker1.getValue() );
HBox hBox = new HBox(colorPicker1);
hBox.setStyle(“-fx-background-color: #d3d3d3”);
stage.setTitle(“JavaFX Colors Example”);
stage.setScene(new Scene(hBox, 400, 400) );
stage.show(); } }
174
Marius Claassen,
Java Intermediate

175. 175
ColorPicker
Marius Claassen,
Java Intermediate

176. Lecture 41: JavaFX Colors exercise
Implement an object named ‘colorPicker’ to
display colours and their web # values
176
Marius Claassen,
Java Intermediate

177. Lecture 41: JavaFX Colors exercise
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.ColorPicker;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;
177
Marius Claassen,
Java Intermediate

178. public class Lecture42 extends Application {
@Override public void start(Stage stage) {
// TODO: Implement an object named ‘colorPicker’
// TODO: to display colours and their # web values
HBox hBox = new HBox(colorPicker);
hBox.setStyle(“-fx-background-color: #d3d3d3”);
stage.setTitle(“JavaFX Colors Solution”);
stage.setScene(new Scene(hBox, 400, 400) );
stage.show(); } }
178
Marius Claassen,
Java Intermediate

179. Lecture 42: JavaFX Colors solution
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.ColorPicker;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;
179
Marius Claassen,
Java Intermediate

180. public class Lecture42 extends Application {
@Override public void start(Stage stage) {
ColorPicker colorPicker = new ColorPicker();
colorPicker.setOnAction(event -> colorPicker.getValue() );
HBox hBox = new HBox(colorPicker);
hBox.setStyle(“-fx-background-color: #d3d3d3”);
stage.setTitle(“JavaFX Colors Solution”);
stage.setScene(new Scene(hBox, 400, 400) );
stage.show(); } }
180
Marius Claassen,
Java Intermediate

181. 181
ColorPicker
Marius Claassen,
Java Intermediate

182. Lecture 43: JavaFX shape example
JavaFX shapes problem statement:
Create a gray rectangle with dimensions 0, 0,
230, 150
182
Marius Claassen,
Java Intermediate

183. Lecture 43: JavaFX shape example
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import javafx.scene.shape.Rectangle;
183
Marius Claassen,
Java Intermediate

184. public class Lecture43 extends Application {
@Override public void start(Stage stage) {
Rectangle rectangle1 = new Rectangle(0, 0, 230, 150);
rectangle1.setFill(Color.GRAY);
VBox vBox = new VBox();
vBox.getChildren().add(rectangle1);
stage.setTitle(“JavaFX Shapes Example”);
stage.setScene(new Scene(vBox, 400, 400) );
stage.show(); } }
184
Marius Claassen,
Java Intermediate

185. 185
Rectangle
Marius Claassen,
Java Intermediate

186. Lecture 43: JavaFX shape exercise
Create a gray rectangle named ‘rectangle’
with dimensions 0, 0, 390, 100
186
Marius Claassen,
Java Intermediate

187. Lecture 43: JavaFX shape exercise
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import javafx.scene.shape.Rectangle;
187
Marius Claassen,
Java Intermediate

188. public class Lecture44 extends Application {
@Override public void start(Stage stage) {
// TODO: Create a gray rectangle named ‘rectangle’
// TODO: with dimensions 0, 0, 390, 100
VBox vBox = new VBox();
vBox.getChildren().add(rectangle);
stage.setTitle(“JavaFX Shapes Solution”);
stage.setScene(new Scene(vBox, 400, 400) );
stage.show(); } }
188
Marius Claassen,
Java Intermediate

189. Lecture 44: JavaFX shapes solution
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import javafx.scene.shape.Rectangle;
189
Marius Claassen,
Java Intermediate

190. public class Lecture44 extends Application {
@Override public void start(Stage stage) {
Rectangle rectangle = new Rectangle(0, 0, 390, 100);
rectangle.setFill(Color.GRAY);
VBox vBox = new VBox();
vBox.getChildren().add(rectangle);
stage.setTitle(“JavaFX Shapes Solution”);
stage.setScene(new Scene(vBox, 400, 400) );
stage.show(); } }
190
Marius Claassen,
Java Intermediate

191. 191
Rectangle
Marius Claassen,
Java Intermediate

192. Lecture 45: JavaFX 3D graphics
JavaFX graphics problem statement:
Create an object named ‘sphere’ with radius
of 200. Wrap the ‘phongMaterial’ object onto
the sphere and add the sphere to the ‘vBox’
object
https://en.wikipedia.org/wiki/Behrmann_projection#/media/File:Behrmann_projection_SW.jpg
192
Marius Claassen,
Java Intermediate

193. Lecture 45: JavaFX 3D graphics
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.paint.PhongMaterial;
import javafx.scene.shape.Sphere;
import javafx.stage.Stage;
193
Marius Claassen,
Java Intermediate

194. public class Lecture45 extends Application {
@Override public void start(Stage stage) {
VBox vBox = new VBox();
Image image = new Image(Lecture45.class.getResource(
“worldmap1.jpg”).toExternalForm() );
PhongMaterial phongMaterial = new PhongMaterial();
phongMaterial.setDiffuseColor(Color.WHITE);
phongMaterial.setDiffuseMap(image);
194
Marius Claassen,
Java Intermediate

195. Sphere sphere = new Sphere(200);
sphere.setMaterial(phongMaterial);
vBox.getChildren().add(sphere);
stage.setTitle(“JavaFX Graphics Example”);
stage.setScene(new Scene(vBox, 400, 400) );
stage.show(); } }
195
Marius Claassen,
Java Intermediate

196. 196
3D Graphic
Marius Claassen,
Java Intermediate

197. Lecture 45: JavaFX graphics exercise
Create an object named ‘sphere’ with radius
of 200. Wrap the ‘phongMaterial’ object onto
the sphere and add the sphere to the ‘vBox’
object
https://en.wikipedia.org/wiki/List_of_map_projections#/media/File:Equirectangular_projection_SW.jpg
197
Marius Claassen,
Java Intermediate

198. Lecture 45: JavaFX graphics
exercise
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.paint.PhongMaterial;
import javafx.scene.shape.Sphere;
import javafx.stage.Stage;
198
Marius Claassen,
Java Intermediate

199. public class Lecture46 extends Application {
@Override public void start(Stage stage) {
VBox vBox = new VBox();
Image image = new Image(Lecture45.class.getResource(
“worldmap2.jpg”).toExternalForm() );
PhongMaterial phongMaterial = new PhongMaterial();
phongMaterial.setDiffuseColor(Color.WHITE);
phongMaterial.setDiffuseMap(image);
199
Marius Claassen,
Java Intermediate

200. // TODO: Create an object named ‘sphere’ with radius of 200.
// TODO: Wrap the ‘phongMaterial’ object onto the sphere
// TODO: and add the sphere to the vBox
stage.setTitle(“JavaFX Graphics Example”);
stage.setScene(new Scene(vBox, 400, 400) );
stage.show(); } }
200
Marius Claassen,
Java Intermediate

201. Lecture 46: JavaFX graphics
solution
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.paint.PhongMaterial;
import javafx.scene.shape.Sphere;
import javafx.stage.Stage;
201
Marius Claassen,
Java Intermediate

202. public class Lecture46 extends Application {
@Override public void start(Stage stage) {
VBox vBox = new VBox();
Image image = new Image(Lecture45.class.getResource(
“worldmap2.jpg”).toExternalForm() );
PhongMaterial phongMaterial = new PhongMaterial();
phongMaterial.setDiffuseColor(Color.WHITE);
phongMaterial.setDiffuseMap(image);
202
Marius Claassen,
Java Intermediate

203. Sphere sphere = new Sphere(200);
sphere.setMaterial(phongMaterial);
vBox.getChildren().add(sphere);
stage.setTitle(“JavaFX Graphics Solution”);
stage.setScene(new Scene(vBox, 400, 400) );
stage.show(); } }
203
Marius Claassen,
Java Intermediate

204. 204
3D Graphic
Marius Claassen,
Java Intermediate

205. Lecture 47: JavaFX video example
JavaFX video problem statement:
Create a video player by implementing the 3
objects ‘media1’, ‘mediaPlayer1’ and
‘mediaView1’.
https://www.youtube.com/watch?v=zg79C7XM1Xs
205
Marius Claassen,
Java Intermediate

206. Lecture 47: JavaFX video example
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.media.MediaView;
import javafx.stage.Stage;
import java.io.File;
206
Marius Claassen,
Java Intermediate

207. public class Lecture47 extends Application {
final String PATH = “C:/videos/Java is what Java does video.mp4”;
@Override public void start(Stage stage) {
File file = new File(PATH);
Media media1 = new Media(file.toURI().toString() );
MediaPlayer mediaPlayer1 = new MediaPlayer(media1);
mediaPlayer1.setAutoPlay(true);
MediaView mediaView1 = new MediaView(mediaPlayer1);
207
Marius Claassen,
Java Intermediate

208. mediaView.setFitWidth(800);
mediaView.setFitHeight(500);
StackPane stackPane = new StackPane(mediaView1);
stage.setTitle(“JavaFX Video Example”);
stage.setScene(new Scene(stackPane) );
stage.show(); } }
208
Marius Claassen,
Java Intermediate

209. 209
Video
Marius Claassen,
Java Intermediate

210. Lecture 47: JavaFX video exercise
Create a video player by implementing the 3
objects ‘media’, ‘mediaPlayer’ and
‘mediaView’
https://www.youtube.com/watch?v=b-Cr0EWwaTk
210
Marius Claassen,
Java Intermediate

211. Lecture 47: JavaFX video exercise
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.media.MediaView;
import javafx.stage.Stage;
import java.io.File;
211
Marius Claassen,
Java Intermediate

212. public class Lecture48 extends Application {
final String PATH = “C:/videos/Java life video.mp4”;
@Override public void start(Stage stage) {
File file = new File(PATH);
// TODO: Create a media player by implementing the 3 objects ‘media’
// TODO: ‘mediaPlayer’
mediaPlayer.setAutoPlay(true);
// TODO: and ‘mediaView’
212
Marius Claassen,
Java Intermediate

213. mediaView.setFitWidth(800);
mediaView.setFitHeight(500);
StackPane stackPane = new StackPane(mediaView);
stage.setTitle(“JavaFX Video Solution”);
stage.setScene(new Scene(stackPane) );
stage.show(); } }
213
Marius Claassen,
Java Intermediate

214. Lecture 48: JavaFX video solution
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.media.MediaView;
import javafx.stage.Stage;
import java.io.File;
214
Marius Claassen,
Java Intermediate

215. public class Lecture48 extends Application {
final String PATH = “C:/videos/Java life video.mp4”;
@Override public void start(Stage stage) {
File file = new File(PATH);
Media media = new Media(file.toURI().toString() );
MediaPlayer mediaPlayer = new MediaPlayer(media);
mediaPlayer.setAutoPlay(true);
MediaView mediaView = new MediaView(mediaPlayer);
215
Marius Claassen,
Java Intermediate

216. mediaView.setFitWidth(800);
mediaView.setFitHeight(500);
StackPane stackPane = new StackPane(mediaView);
stage.setTitle(“JavaFX Video Solution”);
stage.setScene(new Scene(stackPane) );
stage.show(); } }
216
Marius Claassen,
Java Intermediate

217. 217
Video
Marius Claassen,
Java Intermediate

218. Lecture 49: KeyPressed example
JavaFX KeyPressed problem statement:
Implement the setOnKeyPressed() method to
print whether or not the letter ‘B’ is pressed
218
Marius Claassen,
Java Intermediate

219. Lecture 49: KeyPressed example
import javafx.application.Application;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.input.KeyCode;
import javafx.scene.layout.HBox;
import javafx.scene.paint.Color;
import javafx.scene.text.Text;
import javafx.stage.Stage;
219
Marius Claassen,
Java Intermediate

220. public class Lecture49 extends Application {
@Override public void start(Stage stage) {
HBox hBox = new HBox();
Text text = new Text();
hBox.getChilden().add(text);
hBox.setAlignment(Pos.CENTER);
Scene scene = new Scene(hBox, 400, 400);
scene.setFill(Color.LIME);
220
Marius Claassen,
Java Intermediate

221. scene.setOnKeyPressed(event -> text.setText(
event.getCode() == KeyCode.B ? “Letter B” : ”Not letter B”) );
stage.setTitle(“JavaFX KeyPressed Event Example”);
stage.setScene(scene);
stage.show(); } }
221
Marius Claassen,
Java Intermediate

222. 222
KeyPressed Event
Marius Claassen,
Java Intermediate

223. Lecture 49: keyPressed exercise
Implement the setOnKeyPressed() method to
print whether or not the TAB key is pressed
223
Marius Claassen,
Java Intermediate

224. Lecture 49: keyPressed exercise
import javafx.application.Application;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.input.KeyCode;
import javafx.scene.layout.HBox;
import javafx.scene.paint.Color;
import javafx.scene.text.Text;
import javafx.stage.Stage;
224
Marius Claassen,
Java Intermediate

225. public class Lecture50 extends Application {
@Override public void start(Stage stage) {
HBox hBox = new HBox();
Text text = new Text();
hBox.getChilden().add(text);
hBox.setAlignment(Pos.CENTER);
Scene scene = new Scene(hBox, 400, 400);
scene.setFill(Color.GREENYELLOW);
225
Marius Claassen,
Java Intermediate

226. // TODO: Implement the setOnKeyPressed() to print whether or not
// TODO: the TAB key is pressed
stage.setTitle(“JavaFX KeyPressed Event Solution”);
stage.setScene(scene);
stage.show(); } }
226
Marius Claassen,
Java Intermediate

227. Lecture 50: keyPressed solution
import javafx.application.Application;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.input.KeyCode;
import javafx.scene.layout.HBox;
import javafx.scene.paint.Color;
import javafx.scene.text.Text;
import javafx.stage.Stage;
227
Marius Claassen,
Java Intermediate

228. public class Lecture50 extends Application {
@Override public void start(Stage stage) {
HBox hBox = new HBox();
Text text = new Text();
hBox.getChilden().add(text);
hBox.setAlignment(Pos.CENTER);
Scene scene = new Scene(hBox, 400, 400);
scene.setFill(Color.GREENYELLOW);
228
Marius Claassen,
Java Intermediate

229. scene.setOnKeyPressed(event -> text.setText(
event.getCode() == KeyCode.TAB ? “TAB key” : ”Not TAB key”) );
stage.setTitle(“JavaFX KeyPressed Event Solution”);
stage.setScene(scene);
stage.show(); } }
229
Marius Claassen,
Java Intermediate

230. 230
KeyPressed Event
Marius Claassen,
Java Intermediate

231. TOPICS
1. Introduction
2. Java data types
3. Library classes
4. Java classes
5. Lambdas and Streams
6. JavaFX
7. Conclusion
231
Marius Claassen,
Java Intermediate

232. Lecture 51: Final remarks
232
Marius Claassen,
Java Intermediate

233. To get details about this course:
• mariusclaassen@gmail.com
or
• https://www.udemy.com/course/1133518/manage/basics/
233
Marius Claassen,
Java Intermediate