java中的颜色选择器的使用

学习之前请自己查看API文档JFileChooser



static Color showDialog(Component Parent,String title,Color
initialColor)
显示包含颜色选择器的模式对话框
参数： parent 对话框显示再上面的组件
  title 对话框框架的标题
initialColor 颜色选择器的初始颜色
Static JDialog createDialog(Component parent, String
title,boolean modal,JColorChooser chooser
,ActionListener okListener,ActionListener
cancelListener)
创建一个包含颜色选择器的对话框
参数： parent
对话框显示再上面的组件
  title
对话框框架的标题
modal
如果直到对话框关闭，这个调用都被阻塞，则返回true
chooser 添加到对话框中的颜色选择器
okListener,cancelListener
OK和Cancel按钮的监听器
源代码：

package colorChooser;

import java.awt.Color;
import java.awt.Frame;
import java.awt.event.*;

import javax.swing.*;
import javax.swing.event.*;

public class ColorChooserPanelTest {

public static void main(String[] args) {
ColorChooserFrame cc=new ColorChooserFrame();
cc.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
cc.setVisible(true);
}

}

class ColorChooserFrame extends JFrame{
public ColorChooserFrame(){
setSize(400,300);
add(new ColorChooserPanel());
pack();
}
}
class ColorChooserPanel extends JPanel{
public ColorChooserPanel(){
JButton modalButton=new JButton("Modal");
modalButton.addActionListener(new ModalListener());
add(modalButton);
JButton modalessButton=new JButton("Modaless");
modalessButton.addActionListener(new
ModalessListener());
add(modalessButton);
JButton immediateButton=new JButton("Immediate");
immediateButton.addActionListener(new
ImmediateListener());
add(immediateButton);
}
private class ModalListener implements ActionListener{
public void actionPerformed(ActionEvent event){
Color defaultColor=getBackground();
Color
selected=JColorChooser.showDialog(ColorChooserPanel.this, "Set
background", 
defaultColor);
if(selected!=null)setBackground(selected);
}
}
private class ModalessListener implements
ActionListener{
private JDialog dialog;
private JColorChooser chooser;
public ModalessListener(){
chooser=new JColorChooser();
dialog=JColorChooser.createDialog(ColorChooserPanel.this,
"Background",
false, chooser, new ActionListener()//OK button listener
{
public void actionPerformed(ActionEvent event){
setBackground(chooser.getColor());
}
}, null);
}
public void actionPerformed(ActionEvent event){
chooser.setColor(getBackground());
dialog.setVisible(true);
}
}
private class ImmediateListener implements
ActionListener{
private JDialog dialog;
private JColorChooser chooser;
public ImmediateListener(){
chooser=new JColorChooser();
chooser.getSelectionModel().addChangeListener(new
ChangeListener()
{
public void stateChanged(ChangeEvent event){
setBackground(chooser.getColor());
}
});
dialog=new JDialog((Frame)null,false);
dialog.add(chooser);
dialog.pack();
}
public void actionPerformed(ActionEvent event){
chooser.setColor(getBackground());
dialog.setVisible(true);
}
}
}