lineGUI.java

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

public class lineGUI{
    public static void main(String []args){
    Success s=new Success();
    s.setVisible(true);
    }
}

class CompFrame extends JFrame{
    public void paint(Graphics g) {
    super.paint(g);
    Graphics2D g2 = (Graphics2D) g;
    Line2D lin = new Line2D.Float(100, 100, 250, 260);
    g2.draw(lin);
    }
}

class Success extends JFrame{

    JPanel alas =new JPanel();
    JFrame comp =new CompFrame();
    public Success(){
    JPanel panel=new JPanel();
    getContentPane().add(panel);
    setSize(450,450);

    final JButton button =new JButton("press");
    panel.add(button);

    comp.setSize(650,500);
    comp.setTitle("View Report");

    JRootPane compPane=comp.getRootPane();
    Container contePane=compPane.getContentPane();
    contePane.add(alas);


    ActionListener action =new ActionListener(){
        public void actionPerformed(ActionEvent e){
            if (e.getSource()==button){
            comp.setVisible(true);
            }
        }
        };
    button.addActionListener(action);

    JButton button2=new JButton("access");
    alas.add(button2);
    }

}