I am stumped...

Try the following code:

import java.awt.Color;

import java.awt.event.*;

import javax.swing.*;

publicclass TestListextends JFrame{

private DefaultListModel listModel =new DefaultListModel();

public TestList(){

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

JList list =new JList(listModel);

list.setBackground(Color.WHITE);

final JButton btnTest =new JButton("Reload");

btnTest.addActionListener(new ActionListener(){

publicvoid actionPerformed(ActionEvent e){

listModel.clear();

for(int i = 0; i < 4000; i++){

listModel.addElement("testing");

}

}

});

JPanel panel =new JPanel();

panel.add(btnTest);

add(new JScrollPane(list),"Center");

add(panel,"South");

setSize(400, 200);

setVisible(true);

}

publicstaticvoid main(String[] args){

new TestList();

}

}

Do the following steps:

1. Run the program

2. Press "Reload"

3. Select a random element, except the first one.

4. Press "Reload"

5. Select the first element.

6. Press "Reload"

My question is: Why does the program hang on point 6? Look at the button as you press it. It does not hang if you select any other element.

Thanks for any pointers.

Richard

[2567 byte] By [shelziba] at [2007-10-2 20:41:02]