Check out example codes for "main class java". It will help you in understanding the concepts better.

Code Example 1

class myClass {
    public static void main(String[] args) {
        // code
    }
}

Code Example 2

public class Test {

static void main(String[] args){

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

Code Example 3

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

Code Example 4

public static void main(string args)

Code Example 5

public class Test {

public static void main(String[] args){

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

Code Example 6

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

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