Solving Hello world open.kattis.com with Java

/*
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package heloworld2;

/**
 *
 * @author user
 */
public class Heloworld2 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        System.out.println("Hello World!");
    }
   
}

Program Java Pertama yang harus anda buat adalah"Hello World" seperti kode yang sudah saya beri diatas.
Nah !!! Mudah kan ???