Java调色板面板源代码.7z

import java.awt.*; import java.awt.event.*; import javax.swing.*; //Download by http://www.codefans.net public class JColorChooserDemo extends JFrame { private Container container; //容器 private JPanel colorPanel; //用于反映颜色变化的面板 public JColorChooserDemo() { //构造函数 super( "调色板演示" ); //调用JFrame的构造函数 container = getContentPane(); //得到容器 colorPanel=new JPanel(); //初始化面板 JButton selectColorButton = new JButton( "选取颜色" ); //初始化颜色选择按钮 selectColorButton.addActionListener( //为颜色选择按钮增加事件处理 new ActionListener() { public void actionPerformed( ActionEvent event ) { JColorChooser chooser=new JColorChooser(); //实例化颜色选择器 Color color=chooser.showDialog(JColorChooserDemo.this,"选取颜色",Color.lightGray ); //得到选择的颜色 if (color==null) //如果未选取 color=Color.gray; //则设置颜色为灰色 colorPanel.setBackground(color); //改变面板的背景色 } }); container.add(selectColorButton,BorderLayout.NORTH); //增加组件 container.add(colorPanel,BorderLayout.CENTER); //增加组件 setSize( 400, 130 ); //设置窗口尺寸 setVisible(true); //设置窗口可见 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE ); //关闭窗口时退出程序 } public static void main(String args[]) { new JColorChooserDemo(); } }