18.图片按钮、单选框、多选框

图片按钮：ImageIcon、JButton

 1 package com.gui.lesson5;
 2 
 3 import javax.swing.*;
 4 import java.awt.*;
 5 import java.net.URL;
 6 
 7 public class JButtonDemo1 extends JFrame {
 8 
 9     public JButtonDemo1() {
10         Container container = this.getContentPane();
11         //将一个图片变为图标
12         URL url = JButtonDemo1.class.getResource("tx.jpg");
13         Icon icon = new ImageIcon(url);
14 
15         //把这个图标放在按钮上
16         JButton button = new JButton();
17         button.setIcon(icon);
18         button.setToolTipText("图片按钮");
19 
20         //add
21         container.add(button);
22 
23         this.setVisible(true);
24         this.setSize(500, 300);
25         this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
26 
27 
28     }
29 
30     public static void main(String[] args) {
31         new JButtonDemo1();
32     }
33 }

View Code

鼠标放上去，有个图片按钮四个字，同样的需要把下面的tx.jpg图片放进去

 

单选框：JRadioButton

 1 package com.gui.lesson5;
 2 
 3 import javax.swing.*;
 4 import java.awt.*;
 5 
 6 public class JButtonDemo2 extends JFrame {
 7     public JButtonDemo2() {
 8         Container container = getContentPane();
 9 
10         //单选框
11         JRadioButton radioButton1 = new JRadioButton("JRadioButton01");
12         JRadioButton radioButton2 = new JRadioButton("JRadioButton02");
13         JRadioButton radioButton3 = new JRadioButton("JRadioButton03");
14 
15         //由于单选框只能选择一个，分组
16         ButtonGroup group = new ButtonGroup();
17         group.add(radioButton1);
18         group.add(radioButton2);
19         group.add(radioButton3);
20         
21         container.add(radioButton1, BorderLayout.CENTER);
22         container.add(radioButton2, BorderLayout.NORTH);
23         container.add(radioButton3, BorderLayout.SOUTH);
24 
25         this.setVisible(true);
26         this.setSize(300, 500);
27         this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
28     }
29 
30     public static void main(String[] args) {
31         new JButtonDemo2();
32     }
33 }

View Code

把按钮添加到组里面，就只能选择一个了

多选框：JCheckBox

 1 package com.gui.lesson5;
 2 
 3 import javax.swing.*;
 4 import java.awt.*;
 5 
 6 public class JButtonDemo3 extends JFrame {
 7     public JButtonDemo3() {
 8         Container container = this.getContentPane();
 9 
10         //多选框
11         JCheckBox checkBox1 = new JCheckBox("checkBox1");
12         JCheckBox checkBox2 = new JCheckBox("checkBox2");
13 
14         container.add(checkBox1, BorderLayout.NORTH);
15         container.add(checkBox2, BorderLayout.SOUTH);
16 
17         this.setVisible(true);
18         this.setSize(500, 300);
19         this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
20     }
21 
22     public static void main(String[] args) {
23         new JButtonDemo3();
24     }
25 }

View Code

可以选择多个，复选框嘛