Problem with JButton

[Marcus]

Hello, I'm new in java and i need some help with buttons and their actions.
I need to insert buttons to perform three actions (draw lines).

Code:

import javax.swing.*;
import java.awt.*;
import java.awt.geom.*;
import java.awt.event.*;
 
public class antras extends JApplet {
 
  private Rectangle2D Shape4;
 
  public antras () {
  	setBackground( Color.black );
    Shape4 = new Rectangle2D.Float (10.F, 10.F, 480.F, 280.F);
 
  }
 
  public void paint (Graphics g) {
    Graphics2D g2D;
    boolean Contained;
 
    g2D = (Graphics2D) g;
    g2D.setColor(Color.white);
    g2D.fill (Shape4);
    
    Contained = Shape4.intersectsLine (400., 10., 480., 70.);
    //first action
    g2D.setColor (Color.green);
    g2D.drawLine (10, 100, 489, 100);
    
    //second action
    g2D.setStroke(new BasicStroke(1f, BasicStroke.CAP_BUTT, 
                                          BasicStroke.JOIN_ROUND,
                                      1f, new float[] {2f},0f));
    g2D.setColor (Color.green);
    g2D.drawLine (10, 140, 490, 140);
    //third action 
    g2D.setStroke(new BasicStroke(1f, BasicStroke.CAP_BUTT, 
                                          BasicStroke.JOIN_ROUND,
                                      1f, new float[] {5f},0f));
    g2D.setColor (Color.green);
    g2D.drawLine (10, 200, 490, 200);
    
  }
}

Can anybody help?
Thanks.
Marcus

[Felissa]

What you need to look into is an Action Listener for any buttons that you implement.
Some examples can be seen here

I would find the examples much more useful in this case.

Greetings.
Felissa