package com.robert;

import javax.swing.*;

import java.awt.*;

/**

* Created by IntelliJ IDEA.

* User: Administrator

* Date: 11-11-12

* Time: 下午7:14

* To change this template use File | Settings | File Templates.

*/

public class ListTest {

public static void main(String args[])

{

EventQueue.invokeLater(new Runnable() {

public void run() {

JFrame frame = new ListFrame();

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.setVisible(true);

}

});

}

}

package com.robert;

import javax.swing.*;

import javax.swing.event.ListSelectionEvent;

import javax.swing.event.ListSelectionListener;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

/**

* Created by IntelliJ IDEA.

* User: Administrator

* Date: 11-11-12

* Time: 下午7:16

* To change this template use File | Settings | File Templates.

*/

public class ListFrame extends JFrame {

private static int DEFAULT_WIDTH = 400;

private static int DEFAULT_HEIGHT = 300;

private JPanel listPanel;

private JList wordList;

private JLabel label;

private JPanel buttonPanel;

private ButtonGroup group;

private String prefix = "The ";

private String suffix = "fox jumps over the lazy dog";

public ListFrame()

{

setTitle("ListTest");

setSize(DEFAULT_WIDTH,DEFAULT_HEIGHT);

String[] words= {"quick","brown","hungry","wild",

"silent","huge","private","abstract","static","final"};

wordList = new JList(words);

wordList.setVisibleRowCount(6);

JScrollPane scrollPane = new JScrollPane(wordList);

listPanel = new JPanel();

listPanel.add(scrollPane);

wordList.addListSelectionListener(new ListSelectionListener() {

public void valueChanged(ListSelectionEvent e) {

Object[] values = wordList.getSelectedValues();

StringBuilder text = new StringBuilder(prefix);

for(int i=0;i

{

String word = (String)values[i];

text.append(word);

text.append(" ");

}

text.append(suffix);

label.setText(text.toString());

}

});

buttonPanel = new JPanel();

group = new ButtonGroup();

makeButton("Vertical",JList.VERTICAL);

makeButton("Vertical Wrip",JList.VERTICAL_WRAP);

makeButton("Horizonta Wrap",JList.HORIZONTAL_WRAP);

add(listPanel, BorderLayout.NORTH);

label = new JLabel(prefix + suffix);

add(label, BorderLayout.CENTER);

add(buttonPanel,BorderLayout.SOUTH);

}

private void makeButton(String label, final int orientation ) {

JRadioButton button = new JRadioButton(label);

buttonPanel.add(button);

if(group.getButtonCount()==0)

{

button.setSelected(true);

}

group.add(button);

button.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

wordList.setLayoutOrientation(orientation);

listPanel.revalidate();

}

});

}

}