API
- AccessibleContext getAccessibleContext()
获取与此JCheckBox关联的AccessibleContext。 - 2
String getUIClassID()
返回一个字符串，该字符串指定呈现此组件的L＆F类的名称。
3
boolean isBorderPaintedFlat()
获取borderPaintedFlat属性的值。
4
protected String paramString()
返回此JCheckBox的字符串表示形式。
5
void setBorderPaintedFlat(boolean b)
设置borderPaintedFlat属性，该属性提供有关复选框边框外观的外观提示。
6
void updateUI()
将UI属性重置为当前外观的值
实例
package com.company; import java.util.ArrayList; import java.awt.*; import java.awt.event.*; import javax.swing.*; /** * @author JavaEdge */ public class JCheckBoxExample { private JFrame mainFrame; private JLabel headerLabel; private JLabel statusLabel; private JPanel controlPanel; public JCheckBoxExample() { prepareGUI(); } public static void main(String[] args) { JCheckBoxExample swingControlDemo = new JCheckBoxExample(); swingControlDemo.showCheckBoxDemo(); } private void prepareGUI() { mainFrame = new JFrame("JCheckBox实例"); mainFrame.setSize(400, 400); mainFrame.setLayout(new GridLayout(3, 1)); mainFrame.addWindowListener(new WindowAdapter() { @Override 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 showCheckBoxDemo() { headerLabel.setText("Control in action: CheckBox"); final JCheckBox chkApple = new JCheckBox("Java"); final JCheckBox chkMango = new JCheckBox("Go"); final JCheckBox chkPeer = new JCheckBox("数据库"); chkApple.setMnemonic(KeyEvent.VK_C); chkMango.setMnemonic(KeyEvent.VK_M); chkPeer.setMnemonic(KeyEvent.VK_P); chkApple.addItemListener(e -> statusLabel.setText("Java Checkbox: " + (e.getStateChange() == 1 ? "checked" : "unchecked"))); chkMango.addItemListener(e -> statusLabel.setText("Go Checkbox: " + (e.getStateChange() == 1 ? "checked" : "unchecked"))); chkPeer.addItemListener(e -> statusLabel.setText("数据库 Checkbox: " + (e.getStateChange() == 1 ? "checked" : "unchecked"))); controlPanel.add(chkApple); controlPanel.add(chkMango); controlPanel.add(chkPeer); mainFrame.setVisible(true); } }
效果
