Calculator +textfield help Howto add?

[Arkie_student]

Hi, ive a question,


How can i add a textfield to show the digits that i pressed from a button?

and how do i use getsource to add get the correct digit from the buttons?

this is my code:


import java.awt.*;
import java.applet.*;
import java.awt.event.*;

public class RekenMachine
extends Frame
implements WindowListener
{
public RekenMachine (String title)
{
super (title);
addWindowListener (this);
setLayout (new BorderLayout());


Panel p = new Panel() ;
p.setLayout (new GridLayout (4,3));
Button b1 = new Button ("1");
Button b2 = new Button ("2");
Button b3 = new Button ("3");
Button b4 = new Button ("4");
Button b5 = new Button ("5");
Button b6 = new Button ("6");
Button b7 = new Button ("7");
Button b8 = new Button ("8");
Button b9 = new Button ("9");
Button Clear = new Button ("Clear");
Button b0 = new Button ("0");
Button Stop = new Button ("Stop");

p.add(b1);
p.add(b2);
p.add(b3);
p.add(b4);
p.add(b5);
p.add(b6);
p.add(b7);
p.add(b8);
p.add(b9);
p.add(Clear);
p.add(b0);
p.add(Stop);
add (p);

}

public void windowClosing (WindowEvent e)
{
System.exit (0);
}
public void windowActivated (WindowEvent e) { }
public void windowClosed (WindowEvent e) { }
public void windowDeactivated (WindowEvent e) { }
public void windowDeiconified (WindowEvent e) { }
public void windowIconified (WindowEvent e) { }
public void windowOpened (WindowEvent e) { }

public static void main (String [ ] argv)
{
RekenMachine ld = new RekenMachine ("RekenMachine");
ld.setSize (300, 400);
ld.setVisible (true);
}

public void actionPerformed (ActionEvent e)
{
// if (event.getSource() == b1)
// Button b1.getText();
}

public void ActionListener (ActionEvent e)

{



}

}


thnx

[sjalle]

See my comments:

import java.awt.*;
import java.applet.*;
import java.awt.event.*;

public class RekenMaskin extends Frame
    implements WindowListener, ActionListener { // actionlistener for buttons
  TextField disp=null;
  public RekenMaskin (String title) {
  super (title);
  addWindowListener (this);
  setLayout (new BorderLayout());


  disp=new TextField(); // add textfield for display
  Panel p = new Panel() ;
  p.setLayout (new GridLayout (4,3));
  Button b1 = new Button ("1");
  Button b2 = new Button ("2");
  Button b3 = new Button ("3");
  Button b4 = new Button ("4");
  Button b5 = new Button ("5");
  Button b6 = new Button ("6");
  Button b7 = new Button ("7");
  Button b8 = new Button ("8");
  Button b9 = new Button ("9");
  Button Clear = new Button ("Clear");
  Button b0 = new Button ("0");
  Button Stop = new Button ("Stop");

  b0.addActionListener(this); // add this frame to the buttons actionlisteners
  b1.addActionListener(this);
  b2.addActionListener(this);
  b3.addActionListener(this);
  b4.addActionListener(this);
  b5.addActionListener(this);
  b6.addActionListener(this);
  b7.addActionListener(this);
  b8.addActionListener(this);
  b9.addActionListener(this);
  Clear.addActionListener(this);
  Stop.addActionListener(this);

  p.add(b1);
  p.add(b2);
  p.add(b3);
  p.add(b4);
  p.add(b5);
  p.add(b6);
  p.add(b7);
  p.add(b8);
  p.add(b9);
  p.add(Clear);
  p.add(b0);
  p.add(Stop);
  add (p,BorderLayout.CENTER);
  add(disp, BorderLayout.NORTH);

  }

  public void windowClosing (WindowEvent e) {
    System.exit (0);
  }
  public void windowActivated (WindowEvent e) { }
  public void windowClosed (WindowEvent e) { }
  public void windowDeactivated (WindowEvent e) { }
  public void windowDeiconified (WindowEvent e) { }
  public void windowIconified (WindowEvent e) { }
  public void windowOpened (WindowEvent e) { }

  public static void main (String [ ] argv) {
    RekenMaskin ld = new RekenMaskin ("RekenMaskin");
    ld.setSize (300, 400);
    ld.setVisible (true);
  }

  public void actionPerformed (ActionEvent e) {
    String s=e.getActionCommand();
    if (s.equals("Clear")) {
      this.disp.setText("");
    } else if (s.equals("Stop")) {
      this.dispose();
    } else {
      String ss=this.disp.getText().trim()+s;
      disp.setText(ss);
    }
  }
// whats this code doing here...?
public void ActionListener (ActionEvent e)

{



}

}

[Arkie_student]

Originally posted by sjalle
See my comments:

code
[/code]

omfg thank you :-) i cant believe ive missed that.

You saved my day ^^

again, thank you.