oop

1. Object Oriented
Programming
Lab no 5
Basic control structures and loops in JAVA

2. Conditional statements
• Basic 2 ways of conditional statements in java
1. If statements
a. if-else
b. if -else if- else
2. Switch Statements

3. If-else statements
• Syntax
if (condition)
{
// runs if condition will be
true
}
else
{
// runs when condition will be
false
}
• Example

4. If else if statement
• Syntax
if (condition)
{
// runs if condition will be true
}
else if(condition)
{ // runs if this condition will be true
}
else
{
// runs when condition will be false
}

5. Switch Statements

6. Arrays
Array are the type of data structures, which stores a fixed-size sequential collection
of elements of the same type.

7. Declaring Arrays in Java
For example:
int a[]= new int [5];

8. Processing arrays

9. Passing arrays to methods as arguments

10. 2D arrays

11. Strings
Strings are termed as sequence of characters or array of characters

12. Accessor Methods
• Methods used to obtain information about an object are known
as accessor methods.
• For example
1. length of string
2. concatenating two strings

13. Finding length of string
• It returns number of character
contained in the string
• How to use
String name=“maria”;
Int length= name.length();
Concatenating two strings
• It returns a new string which
contains string 1 and staring 2
added to each other at the end
• How to use
string1.concat(string2);
Commonly; we use ‘+’ operator to
combine two strings
String string1=“maria”;
System.out.println(“My name
is”+string1);

14. Substring : Method of substring

15. Explore additional methods
of string..