Java Program Internal

Syntax

public class ClassName {
  public static void main(String[] args) {
    // code to be executed
  }
}

Example

public class HelloWorld {
  public static void main(String[] args) {
    System.out.println("Hello, World!");
  }
}

Output

Hello, World!

Explanation

The main() method is the entry point for every Java program. It is where the program starts execution. The println() method is used to print a string to the console.

Use

This program is a basic "Hello, World!" program that demonstrates the structure and syntax of a Java program.

Important Points

• The public keyword indicates that the class can be accessed from outside the package.
• The static keyword indicates that the method is a class method.
• The void keyword indicates that the method does not return a value.
• The String[] args parameter is used to pass command line arguments to the program.

Summary

This page provides an overview of the internal structure of a Java program, including the main() method and its syntax and usage. It also includes an example program and important points to remember when writing Java programs.