package myproject1;

public class HelloWorld {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		System.out.print("Hello World!");
		System.out.print("日本語を追加！");
	}

}

package myproject1;

public class HelloWorld {
	public static void main(String[] args) {
		System.out.print("Hello World!");
		System.out.print("日本語を追加！");
	}
}

remove comments.