how to create a main class in java code example

Example 1: java define main function

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

Example 2: main method java

public class Test {

public static void main(String[] args){

	System.out.println("Hello World");
	
}
}

Example 3: main method java

public class Test {

static void main(String[] args){

	System.out.println("Hello World");
	
}
}

Example 4: main class java

public static void main(String[] args) {}