------------------siwuxie095
工程名:TestJOptionPane
包名:com.siwuxie095.showdialog
类名:TestConfirmDialog.java
工程结构目录如下:
代码:
package com.siwuxie095.showdialog; import java.awt.BorderLayout; import java.awt.EventQueue; import javax.swing.JFrame; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; import javax.swing.border.EmptyBorder; import com.sun.java.swing.plaf.windows.WindowsLookAndFeel; import javax.swing.JButton; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; public class TestConfirmDialog extends JFrame { private JPanel contentPane; /** * Launch the application. */ public static EventQueue.invokeLater(new Runnable() { public try { TestConfirmDialog frame = new TestConfirmDialog(); frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } /** * Create the frame. */ public TestConfirmDialog() { try { UIManager.setLookAndFeel(new WindowsLookAndFeel()); } catch (UnsupportedLookAndFeelException e1) { e1.printStackTrace(); } setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setBounds(100, 100, 450, 300); contentPane = new JPanel(); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); contentPane.setLayout(new BorderLayout(0, 0)); setContentPane(contentPane); JButton btnshowconfirmdialog = new JButton("显示确认框(showConfirmDialog)"); //为 btnshowconfirmdialog.addMouseListener(new MouseAdapter() { @Override public //直接通过静态方法调用,指定父级窗体 //返回值是 int 类型,创建以接收返回值 //没有关闭确认框时,后面的主窗体是完全无法操作的(即 // int value=JOptionPane.showConfirmDialog(TestConfirmDialog.this, // "你确认退出吗?"); // // if (value==JOptionPane.YES_OPTION) { // System.out.println("你选择了 // System.exit(0); // }else if (value==JOptionPane.NO_OPTION) { // System.out.println("你选择了 // }else if (value==JOptionPane.CANCEL_OPTION) { // System.out.println("你选择了 // }else if (value==JOptionPane.CLOSED_OPTION) { // System.out.println("你直接将窗体关闭了,没有选择"); // } //需要指定 int valuex=JOptionPane.showConfirmDialog(TestConfirmDialog.this, "你确认要退出程序吗?", "请确认", JOptionPane.YES_NO_OPTION, JOptionPane.WARNING_MESSAGE); //判断时要根据第四个参数 optionType //可以选择一个最有用的按钮来判断它的值并处理即可,不用全部都判断 if (valuex==JOptionPane.YES_OPTION) { System.exit(0); } } }); btnshowconfirmdialog.setFocusable(false); contentPane.add(btnshowconfirmdialog, BorderLayout.NORTH); } } |
将窗体
JFrame 的 LookAndFeel 设定为 Windows
在根面板 contentPane 的上方添加一个 JButton,
将其 focusable 属性设为
false
为 JButton 添加 mouseClicked 事件,点击 按钮 弹出确认框
运行程序:
【made by siwuxie095】