Totally lost - can anyone please help?

import java.awt.*;

import java.awt.event.*;

import java.awt.event.ActionListener;

import javax.swing.*;

public class ProjectRx

{

public static void main(String[] args)

{

// For the buttons in left to set text in the textArea

// in right the two classes must communicate in some way.

// Left must have a way to talk to right.

// Option 1:

//Pass a reference to right to left which left can use

//to access the textArea in right.

ProjectRightRx r = new ProjectRightRx();

r.textArea.setText("Red");

ProjectLeftRx l = new ProjectLeftRx(r);

// Option 2:

//You could send a reference to the textArea to left

//instead of the reference to its enclosing class.

//r.textArea.setText("Red");

//ProjectLeftRx l = new ProjectLeftRx(r.textArea);

JFrame aFrame = new JFrame();

aFrame.setTitle("Swing 3");

aFrame.setSize(400, 400);

aFrame.setLocation(100,100);

Container contentPane = aFrame.getContentPane();

contentPane.add(r, "First");

contentPane.add(l, "Last");

aFrame.setVisible(true);

}

}

import java.awt.*;

import java.awt.event.*;

import java.awt.event.ActionListener;

import javax.swing.*;

public class ProjectLeftRx extends JPanel implements ActionListener

{

ProjectRightRx r;

public JButton redButton,greenButton,blueButton,yellowButton;

public ProjectLeftRx(ProjectRightRx r)

{

this.r = r;

JPanel pp = new JPanel();

pp.setBorder(BorderFactory.createTitledBorder("Left"));

setLayout(new BorderLayout());

redButton = new JButton("Red");

redButton.addActionListener(this); // step 4

greenButton = new JButton("Green");

greenButton.addActionListener(this);

blueButton = new JButton("Blue");

blueButton.addActionListener(this);

yellowButton = new JButton("Yellow");

yellowButton.addActionListener(this);

pp.add(redButton);

pp.add(greenButton);

pp.add(blueButton);

pp.add(yellowButton);

add(pp,BorderLayout.NORTH);

}

public void actionPerformed(ActionEvent e)

{

// e.getSource()returns object that generated this event

// To get the name of the button you can try:

JButton button = (JButton)e.getSource();

String name = button.getActionCommand(); // or,

// button.getText();

String ac = e.getActionCommand();

System.out.println("name = " + name + " ac = " + ac);

if (e.getSource() == redButton){

//r.setT("red");

System.out.println("red button");

}

if (e.getSource() == greenButton)

{

r.textArea.setText("green");

System.out.println("green button");

}

if (e.getSource() == blueButton)

{

r.textArea.setText("blue");

System.out.println("blue button");

}

if (e.getSource() == yellowButton)

{

r.textArea.setText("yellow");

System.out.println("yellow button");

}

}

}

import java.awt.*;

import java.awt.event.*;

import java.awt.event.ActionListener;

import javax.swing.*;

public class ProjectRightRx extends JPanel

{

JButton oneButton,twoButton;

public JTextArea textArea;

public ProjectRightRx()

{

JPanel jp = new JPanel();

setLayout(new BorderLayout());

oneButton = new JButton("one");

twoButton = new JButton("two");

textArea = new JTextArea(10,25);

jp.add(oneButton);

jp.add(twoButton);

add(new JLabel("Right", JLabel.CENTER), BorderLayout.NORTH);

add(jp,BorderLayout.SOUTH);

add(textArea,BorderLayout.CENTER);

}

}

crwooda at 2007-7-10 12:07:20 >