This document summarizes key concepts from an introduction to Java programming textbook chapter. It describes the anatomy of a Java program, including classes, methods, statements, and other elements. It also covers programming style guidelines, different types of errors, and includes examples of Java code.
The document describes an introduction to Java programming textbook. It discusses the objectives of the textbook, which are to teach the basics of computer programming, Java, and how to write, compile, and run Java programs. It also provides examples of simple Java programs and explanations of common programming concepts like classes, methods, and basic syntax.
This document provides an introduction to basic Java programming concepts such as programs, programming languages, compiling and running Java programs, and key elements like classes, methods, and print statements. It explains Java features like data types, variables, operators, conditional statements, and loops. Examples of simple Java programs are provided to demonstrate printing output and using strings, escape sequences, and comments.
This document provides an introduction to basic Java programming concepts such as programs, programming languages, compiling and running Java programs, and Java syntax. It explains that a Java program consists of a class containing a main method with print statements. Various Java concepts are defined, such as identifiers, keywords, strings, escape sequences, and syntax errors. Examples of Java print statements and their output are provided.
This document provides an overview of the steps to create a basic Java program. It discusses:
1) Using a text editor or IDE to write Java code in a .java file, compiling it to bytecode with the Java compiler, and running the bytecode with the Java interpreter.
2) The main() method signature including access modifiers, return type, name, and string array parameter.
3) Example code of a simple Java program in Notepad++ including the class name, main method, and use of System.out.println to print output.
This document provides an introduction and overview of computer science and programming concepts including:
- Pseudocode which allows programmers to focus on problem steps rather than specific language syntax.
- Programming tools that aid in software development tasks like compilers, linkers, and code editors.
- An introduction to the Java programming language including its history, syntax, and benefits like portability and built-in networking.
- Key programming concepts like variables, data types, and initializing variables are demonstrated through a simple Java code example to print "Hello World".
This document provides an introduction and overview of computer science and programming concepts including:
- Pseudocode which allows programmers to focus on problem steps rather than specific language syntax.
- Programming tools that aid in software development tasks like compilers, linkers, and code editors.
- An introduction to the Java programming language including its history, syntax, and benefits like portability and built-in networking.
- Key programming concepts like variables, data types, and initializing variables are demonstrated through a simple Java code example to print "Hello World".
This document provides an introduction to Java applications and applets. It discusses that Java can be used to develop both standalone applications and programs designed to run in web browsers (applets). It then covers the history and development of Java, the basic characteristics and components of Java programs, and how to create a simple Java application with classes, methods, and a main method. It also introduces applets, describing them as Java programs embedded in web pages, and covers some key applet methods like init() and paint(). Finally, it provides an example of a basic applet class that draws shapes and text and the HTML required to embed an applet in a web page.
An interface in Java is a blueprint of a class that defines static constants and abstract methods. Interfaces are used to achieve abstraction and multiple inheritance in Java. A class implements an interface to provide method body implementations. Key reasons for using interfaces are abstraction, supporting multiple inheritance, and loose coupling between classes. An interface is declared with the interface keyword and contains only abstract methods. A class implementing an interface must implement all of its methods.
The document describes an introduction to Java programming textbook. It discusses the objectives of the textbook, which are to teach the basics of computer programming, Java, and how to write, compile, and run Java programs. It also provides examples of simple Java programs and explanations of common programming concepts like classes, methods, and basic syntax.
This document provides an introduction to basic Java programming concepts such as programs, programming languages, compiling and running Java programs, and key elements like classes, methods, and print statements. It explains Java features like data types, variables, operators, conditional statements, and loops. Examples of simple Java programs are provided to demonstrate printing output and using strings, escape sequences, and comments.
This document provides an introduction to basic Java programming concepts such as programs, programming languages, compiling and running Java programs, and Java syntax. It explains that a Java program consists of a class containing a main method with print statements. Various Java concepts are defined, such as identifiers, keywords, strings, escape sequences, and syntax errors. Examples of Java print statements and their output are provided.
This document provides an overview of the steps to create a basic Java program. It discusses:
1) Using a text editor or IDE to write Java code in a .java file, compiling it to bytecode with the Java compiler, and running the bytecode with the Java interpreter.
2) The main() method signature including access modifiers, return type, name, and string array parameter.
3) Example code of a simple Java program in Notepad++ including the class name, main method, and use of System.out.println to print output.
This document provides an introduction and overview of computer science and programming concepts including:
- Pseudocode which allows programmers to focus on problem steps rather than specific language syntax.
- Programming tools that aid in software development tasks like compilers, linkers, and code editors.
- An introduction to the Java programming language including its history, syntax, and benefits like portability and built-in networking.
- Key programming concepts like variables, data types, and initializing variables are demonstrated through a simple Java code example to print "Hello World".
This document provides an introduction and overview of computer science and programming concepts including:
- Pseudocode which allows programmers to focus on problem steps rather than specific language syntax.
- Programming tools that aid in software development tasks like compilers, linkers, and code editors.
- An introduction to the Java programming language including its history, syntax, and benefits like portability and built-in networking.
- Key programming concepts like variables, data types, and initializing variables are demonstrated through a simple Java code example to print "Hello World".
This document provides an introduction to Java applications and applets. It discusses that Java can be used to develop both standalone applications and programs designed to run in web browsers (applets). It then covers the history and development of Java, the basic characteristics and components of Java programs, and how to create a simple Java application with classes, methods, and a main method. It also introduces applets, describing them as Java programs embedded in web pages, and covers some key applet methods like init() and paint(). Finally, it provides an example of a basic applet class that draws shapes and text and the HTML required to embed an applet in a web page.
An interface in Java is a blueprint of a class that defines static constants and abstract methods. Interfaces are used to achieve abstraction and multiple inheritance in Java. A class implements an interface to provide method body implementations. Key reasons for using interfaces are abstraction, supporting multiple inheritance, and loose coupling between classes. An interface is declared with the interface keyword and contains only abstract methods. A class implementing an interface must implement all of its methods.
This document contains chapter 1 from the textbook "Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All rights reserved." The chapter introduces computers, programs, and the Java programming language. It discusses problem solving techniques, algorithms, and pseudocode. It also provides examples of writing pseudocode, algorithms, and flowcharts. The objectives of the chapter are to introduce basic Java concepts and have students write, compile, and run a simple Java program.
This document provides an overview of key concepts in Java programming including:
- Creating, compiling, and running Java programs and understanding program anatomy such as comments, packages, classes, and methods.
- Using basic programming constructs like data types, control statements, and arrays to write simple Java programs.
- Establishing a foundation in Java concepts such as Object Oriented Programming (OOP) and establishing a firm understanding of how Java code is structured and executed.
- Learning how to use core Java APIs and frameworks like I/O, Collections, Threads, Reflection, Serialization, Networking, RMI, and JDBC.
This document provides an introduction and overview of Java applications, including:
- A brief history of Java's development starting in 1990s.
- The objectives and topics covered include introductions, history, architecture, security and a sample program.
- Java was designed to be a platform-independent language that can create applications running on a single computer or distributed network.
The document introduces abstract data types (ADTs) and common ADT implementations like bags, lists, stacks, queues, dictionaries, and trees. It discusses the history and characteristics of the Java programming language. It provides an example of a simple Java program that prints output and explains the anatomy of a Java program including comments, reserved words, modifiers, statements, blocks, classes, and methods. It also discusses how to get user input in Java using the Scanner class.
OOP with Java - Abstract Classes and InterfacesRatnaJava
In this session you will learn:
Overview of OOP continued…
Abstraction – using Abstract Classes and Interfaces.
For more information: https://www.mindsmapped.com/courses/software-development/become-a-java-developer-hands-on-training/
The document discusses introductory programming concepts in Java including variables, data types, operators, input/output, and more. It covers defining and initializing variables, numeric data types like int and double, arithmetic operators, reading user input, literals, and examples of simple programs to calculate areas and display time. The overall goal is to teach students how to solve practical problems by learning Java programming fundamentals.
This document provides an overview of an introductory Java programming textbook. It outlines the course objectives which are to understand basic Java concepts like data types, control flow, methods and arrays. It describes the book's organization into parts covering fundamentals, object-oriented programming, GUI programming and comprehensive projects. Each part is broken down into chapters covering specific Java topics.
This document provides an overview of an introductory Java programming textbook. It outlines the course objectives which are to understand basic Java concepts like data types, control flow, methods and arrays. It describes the book's organization into parts covering fundamentals, object-oriented programming, GUI programming and comprehensive projects. Each part is broken down into chapters covering specific Java topics.
This document provides an introduction to programming fundamentals in Java. It begins by outlining the objectives of learning to identify basic Java program parts, differentiate data types and variables, and develop a simple Java program. It then analyzes a sample "Hello World" Java program line-by-line to illustrate program structure. The document continues by explaining Java coding guidelines, comments, statements, blocks, identifiers, keywords, literals, primitive data types, and how to declare and initialize variables in a sample program. The overall summary is that this document serves as an introductory guide to basic Java programming concepts.
The document outlines the course units for an Advanced Java Programming course. Unit 1 covers classes, interfaces, inheritance and encapsulation. Unit 2 discusses methods, method overloading, overriding and recursion. Unit 3 focuses on exceptions, threads and immutability. Unit 4 covers dynamic language support and APIs. Unit 5 is about Java annotation processors and agents.
This document discusses interfaces in Java. It defines an interface as a blueprint of a class that defines static constants and abstract methods. Interfaces are used to achieve abstraction and multiple inheritance in Java. They represent an "is-a" relationship. There are three main reasons to use interfaces - for abstraction, to support multiple inheritance functionality, and to achieve loose coupling. The document provides examples of interfaces, such as a Printable interface and implementations in different classes. It also demonstrates multiple inheritance using interfaces and interface inheritance.
Java was created in the early 1990s by James Gosling at Sun Microsystems. It was originally designed for use in set-top boxes, but is now used widely for both web applications and desktop applications. The key aspects of Java include its simplicity, object-oriented approach, security, robustness, portability, and distributed nature. The Java Virtual Machine (JVM) plays a central role, allowing Java programs to run on any platform that supports the JVM without needing to be recompiled. A Java program consists of classes with methods defined within, and always includes a main method that is the entry point of the program.
java: basics, user input, data type, constructorShivam Singhal
The document provides an overview of some key Java concepts including classes, attributes, methods, objects, constructors, and data types. It explains that classes contain attributes and methods, and that objects are instantiated from classes using constructors. It also describes static and non-static methods, with static methods not requiring an object to be called. The main method is used to control program flow. User input can be obtained through command line arguments, Scanner, or BufferedReader classes.
The document provides an overview of object oriented programming with Java. It discusses the differences between C++ and Java, the fundamentals of Java programming, and tools available for Java development. Key points include:
- Java is best suited for internet applications while C++ is better for large software.
- Java supports interfaces, packages, and other features not in C++.
- The Java Development Kit (JDK) contains compilers and other tools for creating Java programs.
- Java applications are standalone programs while applets are embedded in web pages.
- The document is a lab manual for an introductory Java programming course that provides instructions on installing Java, using an IDE, and writing simple Java programs.
- It explains how to create a "Hello World" Java program using BlueJ or JCreator IDEs, compile and run the program, and addresses common errors students may encounter.
- The document provides an example "Hello World" Java program and explains the key components of a basic Java class including the class definition, main method, and use of System.out.println to display output.
This document discusses Java fundamentals including the parts of a Java program, variables, data types, and output methods. It covers the structure of a Java program including classes, methods, and statements. It also explains using the System.out print methods to display output and how variables store values of different data types like int, float, boolean and char. Special characters, literals, and identifiers are also summarized.
An interface in Java is a blueprint of a class that defines static constants and abstract methods. Interfaces are used to achieve abstraction and multiple inheritance in Java. An interface cannot have method bodies and can only contain abstract methods and variables that are public, static, and final by default. Classes implement interfaces to inherit their methods. Since Java 8, interfaces can also contain default and static methods.
This document discusses Java applets and how to develop them. It covers converting GUI applications to applets, embedding applets in web pages, understanding the applet security model, writing programs that can run as both applications and applets, and overriding applet lifecycle methods. Specific topics covered include displaying a label in an applet, the <applet> HTML tag, enabling applets to run as applications, and how the browser interacts with applets by calling init(), start(), stop(), and destroy() methods.
AI 101: An Introduction to the Basics and Impact of Artificial IntelligenceIndexBug
Imagine a world where machines not only perform tasks but also learn, adapt, and make decisions. This is the promise of Artificial Intelligence (AI), a technology that's not just enhancing our lives but revolutionizing entire industries.
This document contains chapter 1 from the textbook "Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All rights reserved." The chapter introduces computers, programs, and the Java programming language. It discusses problem solving techniques, algorithms, and pseudocode. It also provides examples of writing pseudocode, algorithms, and flowcharts. The objectives of the chapter are to introduce basic Java concepts and have students write, compile, and run a simple Java program.
This document provides an overview of key concepts in Java programming including:
- Creating, compiling, and running Java programs and understanding program anatomy such as comments, packages, classes, and methods.
- Using basic programming constructs like data types, control statements, and arrays to write simple Java programs.
- Establishing a foundation in Java concepts such as Object Oriented Programming (OOP) and establishing a firm understanding of how Java code is structured and executed.
- Learning how to use core Java APIs and frameworks like I/O, Collections, Threads, Reflection, Serialization, Networking, RMI, and JDBC.
This document provides an introduction and overview of Java applications, including:
- A brief history of Java's development starting in 1990s.
- The objectives and topics covered include introductions, history, architecture, security and a sample program.
- Java was designed to be a platform-independent language that can create applications running on a single computer or distributed network.
The document introduces abstract data types (ADTs) and common ADT implementations like bags, lists, stacks, queues, dictionaries, and trees. It discusses the history and characteristics of the Java programming language. It provides an example of a simple Java program that prints output and explains the anatomy of a Java program including comments, reserved words, modifiers, statements, blocks, classes, and methods. It also discusses how to get user input in Java using the Scanner class.
OOP with Java - Abstract Classes and InterfacesRatnaJava
In this session you will learn:
Overview of OOP continued…
Abstraction – using Abstract Classes and Interfaces.
For more information: https://www.mindsmapped.com/courses/software-development/become-a-java-developer-hands-on-training/
The document discusses introductory programming concepts in Java including variables, data types, operators, input/output, and more. It covers defining and initializing variables, numeric data types like int and double, arithmetic operators, reading user input, literals, and examples of simple programs to calculate areas and display time. The overall goal is to teach students how to solve practical problems by learning Java programming fundamentals.
This document provides an overview of an introductory Java programming textbook. It outlines the course objectives which are to understand basic Java concepts like data types, control flow, methods and arrays. It describes the book's organization into parts covering fundamentals, object-oriented programming, GUI programming and comprehensive projects. Each part is broken down into chapters covering specific Java topics.
This document provides an overview of an introductory Java programming textbook. It outlines the course objectives which are to understand basic Java concepts like data types, control flow, methods and arrays. It describes the book's organization into parts covering fundamentals, object-oriented programming, GUI programming and comprehensive projects. Each part is broken down into chapters covering specific Java topics.
This document provides an introduction to programming fundamentals in Java. It begins by outlining the objectives of learning to identify basic Java program parts, differentiate data types and variables, and develop a simple Java program. It then analyzes a sample "Hello World" Java program line-by-line to illustrate program structure. The document continues by explaining Java coding guidelines, comments, statements, blocks, identifiers, keywords, literals, primitive data types, and how to declare and initialize variables in a sample program. The overall summary is that this document serves as an introductory guide to basic Java programming concepts.
The document outlines the course units for an Advanced Java Programming course. Unit 1 covers classes, interfaces, inheritance and encapsulation. Unit 2 discusses methods, method overloading, overriding and recursion. Unit 3 focuses on exceptions, threads and immutability. Unit 4 covers dynamic language support and APIs. Unit 5 is about Java annotation processors and agents.
This document discusses interfaces in Java. It defines an interface as a blueprint of a class that defines static constants and abstract methods. Interfaces are used to achieve abstraction and multiple inheritance in Java. They represent an "is-a" relationship. There are three main reasons to use interfaces - for abstraction, to support multiple inheritance functionality, and to achieve loose coupling. The document provides examples of interfaces, such as a Printable interface and implementations in different classes. It also demonstrates multiple inheritance using interfaces and interface inheritance.
Java was created in the early 1990s by James Gosling at Sun Microsystems. It was originally designed for use in set-top boxes, but is now used widely for both web applications and desktop applications. The key aspects of Java include its simplicity, object-oriented approach, security, robustness, portability, and distributed nature. The Java Virtual Machine (JVM) plays a central role, allowing Java programs to run on any platform that supports the JVM without needing to be recompiled. A Java program consists of classes with methods defined within, and always includes a main method that is the entry point of the program.
java: basics, user input, data type, constructorShivam Singhal
The document provides an overview of some key Java concepts including classes, attributes, methods, objects, constructors, and data types. It explains that classes contain attributes and methods, and that objects are instantiated from classes using constructors. It also describes static and non-static methods, with static methods not requiring an object to be called. The main method is used to control program flow. User input can be obtained through command line arguments, Scanner, or BufferedReader classes.
The document provides an overview of object oriented programming with Java. It discusses the differences between C++ and Java, the fundamentals of Java programming, and tools available for Java development. Key points include:
- Java is best suited for internet applications while C++ is better for large software.
- Java supports interfaces, packages, and other features not in C++.
- The Java Development Kit (JDK) contains compilers and other tools for creating Java programs.
- Java applications are standalone programs while applets are embedded in web pages.
- The document is a lab manual for an introductory Java programming course that provides instructions on installing Java, using an IDE, and writing simple Java programs.
- It explains how to create a "Hello World" Java program using BlueJ or JCreator IDEs, compile and run the program, and addresses common errors students may encounter.
- The document provides an example "Hello World" Java program and explains the key components of a basic Java class including the class definition, main method, and use of System.out.println to display output.
This document discusses Java fundamentals including the parts of a Java program, variables, data types, and output methods. It covers the structure of a Java program including classes, methods, and statements. It also explains using the System.out print methods to display output and how variables store values of different data types like int, float, boolean and char. Special characters, literals, and identifiers are also summarized.
An interface in Java is a blueprint of a class that defines static constants and abstract methods. Interfaces are used to achieve abstraction and multiple inheritance in Java. An interface cannot have method bodies and can only contain abstract methods and variables that are public, static, and final by default. Classes implement interfaces to inherit their methods. Since Java 8, interfaces can also contain default and static methods.
This document discusses Java applets and how to develop them. It covers converting GUI applications to applets, embedding applets in web pages, understanding the applet security model, writing programs that can run as both applications and applets, and overriding applet lifecycle methods. Specific topics covered include displaying a label in an applet, the <applet> HTML tag, enabling applets to run as applications, and how the browser interacts with applets by calling init(), start(), stop(), and destroy() methods.
AI 101: An Introduction to the Basics and Impact of Artificial IntelligenceIndexBug
Imagine a world where machines not only perform tasks but also learn, adapt, and make decisions. This is the promise of Artificial Intelligence (AI), a technology that's not just enhancing our lives but revolutionizing entire industries.
GraphSummit Singapore | The Future of Agility: Supercharging Digital Transfor...Neo4j
Leonard Jayamohan, Partner & Generative AI Lead, Deloitte
This keynote will reveal how Deloitte leverages Neo4j’s graph power for groundbreaking digital twin solutions, achieving a staggering 100x performance boost. Discover the essential role knowledge graphs play in successful generative AI implementations. Plus, get an exclusive look at an innovative Neo4j + Generative AI solution Deloitte is developing in-house.
GraphRAG for Life Science to increase LLM accuracyTomaz Bratanic
GraphRAG for life science domain, where you retriever information from biomedical knowledge graphs using LLMs to increase the accuracy and performance of generated answers
Maruthi Prithivirajan, Head of ASEAN & IN Solution Architecture, Neo4j
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In his public lecture, Christian Timmerer provides insights into the fascinating history of video streaming, starting from its humble beginnings before YouTube to the groundbreaking technologies that now dominate platforms like Netflix and ORF ON. Timmerer also presents provocative contributions of his own that have significantly influenced the industry. He concludes by looking at future challenges and invites the audience to join in a discussion.
Dr. Sean Tan, Head of Data Science, Changi Airport Group
Discover how Changi Airport Group (CAG) leverages graph technologies and generative AI to revolutionize their search capabilities. This session delves into the unique search needs of CAG’s diverse passengers and customers, showcasing how graph data structures enhance the accuracy and relevance of AI-generated search results, mitigating the risk of “hallucinations” and improving the overall customer journey.
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Driving Business Innovation: Latest Generative AI Advancements & Success StorySafe Software
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During the hour, we’ll take you through:
Guest Speaker Segment with Hannah Barrington: Dive into the world of dynamic real estate marketing with Hannah, the Marketing Manager at Workspace Group. Hear firsthand how their team generates engaging descriptions for thousands of office units by integrating diverse data sources—from PDF floorplans to web pages—using FME transformers, like OpenAIVisionConnector and AnthropicVisionConnector. This use case will show you how GenAI can streamline content creation for marketing across the board.
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Custom AI Models: Discover how to leverage FME to build personalized AI models using your data. Whether it’s populating a model with local data for added security or integrating public AI tools, find out how FME facilitates a versatile and secure approach to AI.
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This webinar is ideal for professionals seeking to harness the power of AI within their data management systems while ensuring high levels of customization and security. Whether you're a novice or an expert, gain actionable insights and strategies to elevate your data processes. Join us to see how FME and AI can revolutionize how you work with data!
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- These are slides of the talk given at IEEE International Conference on Software Testing Verification and Validation Workshop, ICSTW 2022.
1. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
1
Chapter 1 Introduction to
Computers, Programs, and Java
2. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
2
Anatomy of a Java Program
Class name
Main method
Statements
Statement terminator
Reserved words
Comments
Blocks
3. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
3
// This program prints Welcome to Java!
public class Welcome {
public static void main(String[] args) {
System.out.println("Welcome to Java!");
}
}
Class Name
Every Java program must have at least one class.
Each class has a name. By convention, class names
start with an uppercase letter. In this example, the
class name is Welcome.
4. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
4
// This program prints Welcome to Java!
public class Welcome {
public static void main(String[] args) {
System.out.println("Welcome to Java!");
}
}
Main Method
Line 2 defines the main method. In order to run a
class, the class must contain a method named main.
The program is executed from the main method.
5. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
5
// This program prints Welcome to Java!
public class Welcome {
public static void main(String[] args) {
System.out.println("Welcome to Java!");
}
}
Statement
A statement represents an action or a sequence of actions.
The statement System.out.println("Welcome to Java!") in
the program in Listing 1.1 is a statement to display the
greeting "Welcome to Java!“.
6. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
6
// This program prints Welcome to Java!
public class Welcome {
public static void main(String[] args) {
System.out.println("Welcome to Java!");
}
}
Statement Terminator
Every statement in Java ends with a semicolon (;).
7. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
7
// This program prints Welcome to Java!
public class Welcome {
public static void main(String[] args) {
System.out.println("Welcome to Java!");
}
}
Reserved words
Reserved words or keywords are words that have a
specific meaning to the compiler and cannot be used for
other purposes in the program. For example, when the
compiler sees the word class, it understands that the word
after class is the name for the class.
8. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
8
Blocks
A pair of braces in a program forms a block that groups
components of a program.
public class Test {
public static void main(String[] args) {
System.out.println("Welcome to Java!");
}
}
Class block
Method block
9. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
9
Special Symbols
Character Name Description
{}
()
[]
//
" "
;
Opening and closing
braces
Opening and closing
parentheses
Opening and closing
brackets
Double slashes
Opening and closing
quotation marks
Semicolon
Denotes a block to enclose statements.
Used with methods.
Denotes an array.
Precedes a comment line.
Enclosing a string (i.e., sequence of characters).
Marks the end of a statement.
10. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
10
// This program prints Welcome to Java!
public class Welcome {
public static void main(String[] args) {
System.out.println("Welcome to Java!");
}
}
{ … }
11. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
11
// This program prints Welcome to Java!
public class Welcome {
public static void main(String[] args) {
System.out.println("Welcome to Java!");
}
}
( … )
12. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
12
// This program prints Welcome to Java!
public class Welcome {
public static void main(String[] args) {
System.out.println("Welcome to Java!");
}
}
;
13. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
13
// This program prints Welcome to Java!
public class Welcome {
public static void main(String[] args) {
System.out.println("Welcome to Java!");
}
}
// …
14. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
14
// This program prints Welcome to Java!
public class Welcome {
public static void main(String[] args) {
System.out.println("Welcome to Java!");
}
}
" … "
15. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
15
Programming Style and
Documentation
Appropriate Comments
Naming Conventions
Proper Indentation and Spacing Lines
Block Styles
16. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
16
Appropriate Comments
Include a summary at the beginning of the
program to explain what the program does, its key
features, its supporting data structures, and any
unique techniques it uses.
Include your name, class section, instructor, date,
and a brief description at the beginning of the
program.
17. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
17
Naming Conventions
Choose meaningful and descriptive names.
Class names:
– Capitalize the first letter of each word in the
name. For example, the class name
ComputeExpression.
18. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
18
Proper Indentation and Spacing
Indentation
– Indent two spaces.
Spacing
– Use blank line to separate segments of the code.
19. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
19
Block Styles
Use end-of-line style for braces.
public class Test
{
public static void main(String[] args)
{
System.out.println("Block Styles");
}
}
public class Test {
public static void main(String[] args) {
System.out.println("Block Styles");
}
}
End-of-line
style
Next-line
style
20. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
20
Programming Errors
Syntax Errors
– Detected by the compiler
Runtime Errors
– Causes the program to abort
Logic Errors
– Produces incorrect result
21. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
21
Syntax Errors
public class ShowSyntaxErrors {
public static main(String[] args) {
System.out.println("Welcome to Java);
}
}
Run
ShowSyntaxErrors
22. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
22
Syntax Errors
public class ShowSyntaxErrors {
public static main(String[] args) {
System.out.println("Welcome to Java")
}
}
Run
ShowSyntaxErrors
23. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
23
Syntax Errors
public class ShowSyntaxErrors {
public static main(String[] args) {
system.out.println("Welcome to Java");
}
}
Run
ShowSyntaxErrors
"
24. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
24
Runtime Errors
public class ShowRuntimeErrors {
public static void main(String[] args) {
System.out.println(1 / 0);
}
}
Run
ShowRuntimeErrors
25. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
25
Logic Errors
public class ShowLogicErrors {
public static void main(String[] args) {
System.out.println("Celsius 35 is Fahrenheit degree ");
System.out.println((9 / 5) * 35 + 32);
}
}
Run
ShowLogicErrors
26. Liang, Introduction to Java Programming, Tenth Edition, (c) 2015 Pearson Education, Inc. All
rights reserved.
26
Compute Perimeter Area
// page 31 #1.8
public class Circle{
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("perimeter: ");
System.out.println(2 * 5.5 * 3.14159);
System.out.println("area: ");
System.out.println( 5.5 * 5.5 * 3.14159);
}
}
Run
ShowLogicErrors