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//分解颜色 import javax.swing.*; import javax.swing.colorchooser.*; import java.awt.*; import java.awt.event.*; public class Test extends JApplet { private JColorChooser chooser=new JColorChooser(); private JButton button=new JButton("颜色选择器") ; private JDialog dialog; //初始化程序 public void init() { Container contentPane=getContentPane(); contentPane.setLayout(new FlowLayout() ); contentPane.add(button,BorderLayout.CENTER); chooser.setPreviewPanel(new PreviewPanel()); button.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if(dialog==null) dialog=JColorChooser.createDialog( Test1.this,//parent comp "pick A color", false, chooser, null, null); dialog.setVisible(true); } }); } class PreviewPanel extends JPanel { public PreviewPanel() { setPreferredSize(new Dimension(0,100) ); setBorder(BorderFactory.createRaisedBevelBorder()); } public void painTComonent(Graphics g){ Dimension size=getSize(); g.setColor(getForeground()) ; g.fillRect(0,0,size.width ,size.height ) ; } } }