Swing JColorChooser類

JColorChooser類提供了一個控件窗格，旨在允許用戶操作和選擇顏色。

類聲明

以下是javax.swing.JColorChooser類的聲明 -

public class JColorChooser
   extends JComponent
      implements Accessible

字段

以下是javax.swing.JColorChooser類的字段 -

• protected AccessibleContext accessibleContext
• static String CHOOSER_PANELS_PROPERTY - chooserPanel數組屬性名稱。
• static String PREVIEW_PANEL_PROPERTY - 預覽面板屬性名稱。
• static String SELECTION_MODEL_PROPERTY - 選擇模型屬性名稱。

構造函數

類方法

方法繼承

該類繼承以下類中的方法 -

• javax.swing.JComponent
• java.awt.Container
• java.awt.Component
• java.lang.Object

JColorChooser示例

使用編輯器創建以下Java程式：SwingControlDemo.java

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class JColorChooserExample {
   private JFrame mainFrame;
   private JLabel headerLabel;
   private JLabel statusLabel;
   private JPanel controlPanel;

   public JColorChooserExample(){
      prepareGUI();
   }
   public static void main(String[] args){
       JColorChooserExample  swingControlDemo = new JColorChooserExample();
      swingControlDemo.showColorChooserDemo();
   }
   private void prepareGUI(){
      mainFrame = new JFrame("Java Swing JColorChooser示例");
      mainFrame.setSize(400,400);
      mainFrame.setLayout(new GridLayout(3, 1));

      mainFrame.addWindowListener(new WindowAdapter() {
         public void windowClosing(WindowEvent windowEvent){
            System.exit(0);
         }
      });
      headerLabel = new JLabel("", JLabel.CENTER);
      statusLabel = new JLabel("",JLabel.CENTER);
      statusLabel.setSize(350,100);

      controlPanel = new JPanel();
      controlPanel.setLayout(new FlowLayout());

      mainFrame.add(headerLabel);
      mainFrame.add(controlPanel);
      mainFrame.add(statusLabel);
      mainFrame.setVisible(true);
   }
   private void showColorChooserDemo(){
      headerLabel.setText("Control in action: JColorChooser");
      JButton chooseButton = new JButton("選擇背景顏色");

      chooseButton.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            Color backgroundColor = JColorChooser.showDialog(mainFrame,
               "選擇背景顏色", Color.white);
            if(backgroundColor != null){
               controlPanel.setBackground(backgroundColor);
               mainFrame.getContentPane().setBackground(backgroundColor);
            }
         }
      });
      controlPanel.add(chooseButton);
      mainFrame.setVisible(true);
   }
}

執行上面示例代碼，得到以下結果：