package GUI;

import java.io.IOException;

public class FirstGUI
{
	public static void main(String[] args) throws InterruptedException, IOException{
		
	}
}

package GUI;

import java.io.IOException;

public class FirstGUI
{
	public static void main(String[] args) throws InterruptedException, IOException{
		System.out.printline("txt");
	}
}

Update FirstGUI.java