【Java-GUI】09 Swing03 对话框

package cn.dzz.swing;

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

public class Demo06 {

    JFrame jFrame = new JFrame("消息弹出框案例");
    JTextArea jTextArea = new JTextArea(6, 30);
    JButton jButton = new JButton(new AbstractAction("弹出消息框") {
        @Override
        public void actionPerformed(ActionEvent e) {
            // 弹出一个对话框，显示文本域中输入的内容
            String text = jTextArea.getText();
            JOptionPane.showMessageDialog(
                    jFrame,
                    text,
                    "消息提示",
                    JOptionPane.INFORMATION_MESSAGE
            );
        }
    });


    public void init(){
        jFrame.add(jTextArea, BorderLayout.CENTER);
        jFrame.add(jButton, BorderLayout.SOUTH);

        jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        jFrame.pack();
        jFrame.setVisible(true);
    }

    public static void main(String[] args) {
        new Demo06().init();
    }
}

JOptionPane.INFORMATION_MESSAGE
// JOptionPane.ERROR_MESSAGE
// JOptionPane.WARNING_MESSAGE
// JOptionPane.QUESTION_MESSAGE
// JOptionPane.PLAIN_MESSAGE, 可以再加上 new ImageIcon(String path) 显示图像

package cn.dzz.swing;

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

public class Demo06 {

    JFrame jFrame = new JFrame("消息弹出框案例");
    JTextArea jTextArea = new JTextArea(6, 30);
    JButton jButton = new JButton(new AbstractAction("弹出确认框") {
        @Override
        public void actionPerformed(ActionEvent e) {
            String text = jTextArea.getText();
            // JOptionPane.DEFAULT_OPTION
            // JOptionPane.YES_NO_OPTION
            // JOptionPane.YES_NO_CANCEL_OPTION
            int result = JOptionPane.showConfirmDialog(jFrame, text, "确认对话框", JOptionPane.YES_NO_CANCEL_OPTION);
            switch (result) {
                case JOptionPane.YES_OPTION: //  case JOptionPane.OK_OPTION:
                    jTextArea.append("\n用户选择了YES 和确认的结果一样");
                    break;
                case JOptionPane.NO_OPTION:
                    jTextArea.append("\n用户选择了NO");
                    break;
                case JOptionPane.CANCEL_OPTION:
                    jTextArea.append("\n用户选择了 取消");
                    break;
            }
        }
    });

    public void init(){
        jFrame.add(jTextArea, BorderLayout.CENTER);
        jFrame.add(jButton, BorderLayout.SOUTH);

        jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        jFrame.pack();
        jFrame.setVisible(true);
    }

    public static void main(String[] args) {
        new Demo06().init();
    }
}

package cn.dzz.swing;

import jdk.nashorn.internal.scripts.JO;

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

public class Demo06 {

    JFrame jFrame = new JFrame("消息弹出框案例");
    JTextArea jTextArea = new JTextArea(6, 30);
    JButton jButton = new JButton(new AbstractAction("弹出输入框") {
        @Override
        public void actionPerformed(ActionEvent e) {
            String text = jTextArea.getText();
            String input = JOptionPane.showInputDialog(
                    jFrame,
                    "请填写你的输入信息",
                    "输入对话框",
                    JOptionPane.INFORMATION_MESSAGE
            );
            jTextArea.append(input + "\n");
        }
    });

    public void init(){
        jFrame.add(jTextArea, BorderLayout.CENTER);
        jFrame.add(jButton, BorderLayout.SOUTH);

        jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        jFrame.pack();
        jFrame.setVisible(true);
    }

    public static void main(String[] args) {
        new Demo06().init();
    }
}

package cn.dzz.swing;

import jdk.nashorn.internal.scripts.JO;

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

public class Demo06 {

    JFrame jFrame = new JFrame("消息弹出框案例");
    JTextArea jTextArea = new JTextArea(6, 30);
    JButton jButton = new JButton(new AbstractAction("弹出输入框") {
        @Override
        public void actionPerformed(ActionEvent e) {
            String text = jTextArea.getText();

            String[] strings = {
                    "选项1",
                    "选项2",
                    "选项3",
            };

            int result = JOptionPane.showOptionDialog(
                    jFrame,
                    "选择提示信息",
                    "选项对话框",
                    JOptionPane.DEFAULT_OPTION,
                    JOptionPane.INFORMATION_MESSAGE,
                    null,
                    strings,
                    "初始选项"
            );

            jTextArea.append(strings[result] + "\n");
        }
    });

    public void init(){
        jFrame.add(jTextArea, BorderLayout.CENTER);
        jFrame.add(jButton, BorderLayout.SOUTH);

        jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        jFrame.pack();
        jFrame.setVisible(true);
    }

    public static void main(String[] args) {
        new Demo06().init();
    }
}