import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class JFrameTest extends JFrame{
    public JFrameTest(Boolean focusable) {
        if (focusable){
           setTitle("Focusable");
        }else{
           setTitle("Non-Focusable");
        }
        getContentPane().add(new JTextArea());
        setSize(200,100);
        setFocusableWindowState(focusable);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible(true);
    }

    public static void main(String args[]) {
        JFrameTest test1 = new JFrameTest(true);
        test1.setLocation(0,0);
        JFrameTest test2 = new JFrameTest(true);
        test2.setLocation(200,0);
        JFrameTest test3 = new JFrameTest(false);
        test3.setLocation(400,0);
    }
}