1 package com.yycome.Swing_1;
 2  ?
 3  import javax.swing.*;
 4  import java.awt.*;
 5  ?
 6  //Swing只是设计的更好一点，它本质上继承了awt
 7  public class TestJFrameDemo {
 8      public static void main(String[] args) {
 9          new MyJFrame().init();
10      }
11  }
12  class MyJFrame{
13      //在开发中，我们一般设置一个初始化的方法init()!就舍弃了继承！
14      public void init(){
15          JFrame jFrame = new JFrame("我的第一个JFrame窗口");
16          jFrame.setVisible(true);
17          jFrame.setBounds(2,2,500,400);
18          //swing封装了关闭窗口的方法，可以直接调用
19          jFrame.setDefaultCloseOperation(3);
20          //重点来了！！
21          //swing里面有一个容器的概念（窗口也是个容器），首先要获得一个容器，才能在容器上设置
22          //背景这些东西
23          Container contentPane = jFrame.getContentPane();
24          JLabel label = new JLabel("第一个标签！");
25          contentPane.add(label);
26          contentPane.setBackground(Color.yellow);
27          //设置标签居中对齐
28          label.setHorizontalAlignment(0);
29      }
30  }

 1 package com.yycome.Swing_1;
 2  ?
 3  import javax.swing.*;
 4  import java.awt.*;
 5  import java.awt.event.ActionEvent;
 6  import java.awt.event.ActionListener;
 7  ?
 8  //设置弹窗！很重要！JFrame默认带有窗口的关闭！但是默认的是隐藏！
 9  // 所以还是要加上关闭方法
10  public class TestJDialog {
11      public static void main(String[] args) {
12          new MyDialog().init();
13      }
14  }
15  class MyDialog extends JFrame{
16      public void init(){
17          this.setBounds(20,20,500,400);
18          this.setVisible(true);
19          this.setDefaultCloseOperation(3);
20  ?
21          JButton button = new JButton("点我提示！");
22          Container container = this.getContentPane();
23          //绝对布局，就是自己用坐标设置布局！
24          container.setLayout(null);
25          button.setBounds(20,20,100,50);
26          container.add(button);
27          button.addActionListener(new ActionListener() {
28              @Override
29              public void actionPerformed(ActionEvent e) {
30                  //弹窗
31                  new MyDialogDemo();
32              }
33          });
34      }
35  }
36  //弹窗类
37  class MyDialogDemo extends JDialog{
38      public MyDialogDemo() {
39          this.setBounds(50,50,400,300);
40          this.setVisible(true);
41          Container pane = this.getContentPane();
42          JLabel label = new JLabel("我会弹窗了~");
43          label.setSize(100,50);
44          label.setHorizontalAlignment(0);
45          pane.add(label);
46      }
47  }

 1 package com.yycome.Swing_1;
 2  ?
 3  import javax.swing.*;
 4  import java.awt.*;
 5  ?
 6  //画出图标，实际就是在label上画图形或者添加图片！
 7  public class TestIcon {
 8      public static void main(String[] args) {
 9          new MyIcon().init();
10      }
11  }
12  //一个类既继承了一个类又实现了一个接口
13  class MyIcon extends JFrame implements Icon{
14      //属性
15      int width,height;
16      //方法
17      public MyIcon() {
18      }
19  ?
20      public MyIcon(int width, int height) {
21          this.width = width;
22          this.height = height;
23      }
24      public void init(){
25          this.setBounds(100,100,500,400);
26          this.setVisible(true);
27          this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
28          MyIcon icon = new MyIcon(20, 20);
29          JLabel label = new JLabel("logo", icon, 0);
30          Container pane = this.getContentPane();
31          pane.add(label);
32      }
33  ?
34      //画出图标
35      @Override
36      public void paintIcon(Component c, Graphics g, int x, int y) {
37          //画一个圆形图标
38          g.setColor(Color.yellow);
39          g.fillOval(x,y,width,height);//这里有一个int类型的x,y!
40          g.setColor(Color.black);
41      }
42  //获得图标的宽
43      @Override
44      public int getIconWidth() {
45          return width;
46      }
47      //获得图标的高
48      @Override
49      public int getIconHeight() {
50          return height;
51      }
52  }
53  ?

 1 package com.yycome.Swing_1;
 2  ?
 3  import javax.swing.*;
 4  import java.awt.*;
 5  import java.net.URL;
 6  ?
 7  //绘制图片标签：
 8  public class TestImageIcon {
 9      public static void main(String[] args) {
10          new MyImageIcon().init();
11      }
12  }
13  class MyImageIcon extends JFrame{
14  ?
15      public void init(){
16          this.setBounds(100,100,500,400);
17          this.setVisible(true);
18          this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
19  ?
20          JLabel label = new JLabel("imageIcon");
21          label.setHorizontalAlignment(0);
22          //加/为根目录，以后都加上吧
23          URL url = MyImageIcon.class.getResource("/image/4.jpg");
24  ?
25          //url转为icon,这个方法默认是从根目录加载的！！所以url要从工程的根目录出发
26          ImageIcon icon = new ImageIcon(url);
27          label.setIcon(icon);
28  ?
29          Container pane = this.getContentPane();
30          pane.add(label);
31      }
32  }

 1 package com.yycome.Swing_2;
 2  ?
 3  import javax.swing.*;
 4  import java.awt.*;
 5  ?
 6  ?
 7  //普通面板
 8  public class TestJPanel {
 9      public static void main(String[] args) {
10          new MyJPanel().init();
11      }
12  }
13  class MyJPanel extends JFrame {
14      public void init(){
15          this.setBounds(100,100,500,400);
16          this.setVisible(true);
17          this.setDefaultCloseOperation(3);
18          Container container = this.getContentPane();
19          container.setLayout(new GridLayout(1,2));
20  ?
21          JPanel panel1 = new JPanel();
22          JPanel panel2 = new JPanel();
23          panel1.setLayout(new GridLayout(2,1));
24          panel2.setLayout(new GridLayout(1,2));
25  ?
26          JButton button1 = new JButton("1");
27          JButton button2 = new JButton("1");
28          JButton button3 = new JButton("2");
29          JButton button4 = new JButton("2");
30  ?
31          panel1.add(button1);
32          panel1.add(button2);
33          panel2.add(button4);
34          panel2.add(button3);
35  ?
36          container.add(panel1);
37          container.add(panel2);
38      }
39  }
40 JscrollPane:带滚动条的面板
41 
42  package com.yycome.Swing_2;
43  ?
44  import javax.swing.*;
45  import java.awt.*;
46  //带滚动条的面板
47  public class TestJScrollPane {
48      public static void main(String[] args) {
49          new MyScrollPane().init();
50      }
51  }
52  class MyScrollPane extends JFrame{
53      public void init(){
54          this.setBounds(100,100,300,200);
55          this.setVisible(true);
56          this.setDefaultCloseOperation(3);
57          Container container = this.getContentPane();
58  ?
59          JTextArea jTextArea = new JTextArea(50,10);
60          jTextArea.setText("hello");
61          JScrollPane jScrollPane = new JScrollPane(jTextArea);
62          //以下两行代码是有问题的！
63          //JScrollPane不能用add方法增加组件！！显示不出来！只能在定义的时候加组件！！
64          //！！难道？？！！！在swing中，只有容器才能add！！面板和窗口都不能add!!
65          //但是，panel面板可以add啊！很迷！
66  //        JScrollPane jScrollPane = new JScrollPane();
67  //        jScrollPane.add(jTextArea);
68          container.add(jScrollPane);
69      }
70  }
71  

 1 package com.yycome.Swing_2;
 2  ?
 3  import javax.swing.*;
 4  import java.awt.*;
 5  import java.net.URL;
 6  ?
 7  //图片按钮
 8  public class TestJButton01 {
 9      public static void main(String[] args) {
10          new MyJButton01().init();
11      }
12  }
13  class MyJButton01 extends JFrame{
14      public void init(){
15          setDefaultCloseOperation(3);
16          setBounds(100,100,300,300);
17          setVisible(true);
18  ?
19          Container container = this.getContentPane();
20          JButton button = new JButton();
21          button.setText("图片按钮");
22          button.setToolTipText("这是一个图片按钮！");//鼠标悬停提示！
23          URL url = MyJButton01.class.getResource("/image/3.jpg");
24          //把图片转换为图标
25          ImageIcon icon = new ImageIcon(url);
26          button.setIcon(icon);
27  ?
28          container.add(button);
29  ?
30      }
31  }

 1 package com.yycome.Swing_2;
 2  ?
 3  import javax.swing.*;
 4  import java.awt.*;
 5  ?
 6  //单选按钮
 7  public class TestJButton02 {
 8      public static void main(String[] args) {
 9          new MyJRadioButton().init();
10      }
11  }
12  class MyJRadioButton extends JFrame{
13      public void init(){
14          setDefaultCloseOperation(3);
15          setBounds(100,100,300,300);
16          setVisible(true);
17  ?
18          Container container = this.getContentPane();
19  ?
20          //创建单选按钮
21          JRadioButton button1 = new JRadioButton("button1");
22          JRadioButton button2 = new JRadioButton("button2");
23          JRadioButton button3 = new JRadioButton("button3");
24  ?
25          //把单选按钮分组！！这是灵魂所在！如果不分组，则类似多选框！
26          ButtonGroup group = new ButtonGroup();
27          group.add(button1);
28          group.add(button2);
29          group.add(button3);
30          //可以直接设置布局！
31          container.add(button1,BorderLayout.NORTH);
32          container.add(button2,BorderLayout.CENTER);
33          container.add(button3,BorderLayout.SOUTH);
34      }
35  }

 1 package com.yycome.Swing_2;
 2  ?
 3  import javax.swing.*;
 4  import java.awt.*;
 5  ?
 6  //多选框
 7  public class TestJButton03 {
 8      public static void main(String[] args) {
 9          new MyJCheckBox().init();
10      }
11  }
12  class MyJCheckBox extends JFrame{
13      public void init(){
14          setDefaultCloseOperation(3);
15          setBounds(100,100,300,300);
16          setVisible(true);
17  ?
18          Container container = this.getContentPane();
19  ?
20          JCheckBox button1 = new JCheckBox("button1");
21          JCheckBox button2 = new JCheckBox("button2");
22          JCheckBox button3 = new JCheckBox("button3");
23  ?
24          container.add(button1,BorderLayout.NORTH);
25          container.add(button2,BorderLayout.CENTER);
26          container.add(button3,BorderLayout.SOUTH);
27      }
28  }
29  

 1  package com.yycome.Swing_3;
 2  ?
 3  import javafx.scene.control.ComboBox;
 4  ?
 5  import javax.swing.*;
 6  import java.awt.*;
 7  ?
 8  //下拉框
 9  public class TestComboBox01 {
10      public static void main(String[] args) {
11          new MyComboBox().init();
12      }
13  }
14  class MyComboBox extends JFrame{
15      public void init(){
16          setDefaultCloseOperation(3);
17          setBounds(100,100,300,300);
18          setVisible(true);
19  ?
20          Container container = this.getContentPane();
21  ?
22  //        JComboBox<Object> comboBox = new JComboBox<>();//泛型，删去也不报错
23          JComboBox comboBox = new JComboBox();
24          comboBox.addItem(null);//默认
25          comboBox.addItem("语文");
26          comboBox.addItem("数学");
27          comboBox.addItem("英语");
28          container.add(comboBox);
29  ?
30      }
31  }
32  
33 
34 列表框：JList
35 
36  package com.yycome.Swing_3;
37  ?
38  import javax.swing.*;
39  import java.awt.*;
40  import java.util.Vector;
41  ?
42  //列表框，就是一次陈列所有东西的一个列表
43  public class TestJList {
44      public static void main(String[] args) {
45          new MyJList().init();
46      }
47  }
48  class MyJList extends JFrame{
49      public void init(){
50          setBounds(100,100,500,400);
51          setVisible(true);
52          setDefaultCloseOperation(3);
53  ?
54          Container container = this.getContentPane();
55  ?
56          //需要一个存放列表内容的盒子！可以是String静态数组，也可以是Vector动态数组！
57  //        String[] contents = {"1","2","3","4"};//静态数组初始化
58          Vector contents = new Vector();//动态的数据类型！可以动态加入数据！
59              //动态数据类型初始化
60          contents.add("1");
61          contents.add("2");
62          contents.add("3");
63          contents.add("4");
64  ?
65          JList jList = new JList(contents);
66          container.add(jList);
67      }
68  }
69  ?

 1  package com.yycome.Swing_3;
 2  ?
 3  import javax.swing.*;
 4  import java.awt.*;
 5  ?
 6  ?
 7  //文本框
 8  public class TestJTextField {
 9      public static void main(String[] args) {
10          new MyText().init();
11      }
12  }
13  class MyText extends JFrame {
14      public void init(){
15          setBounds(100,100,500,400);
16          setVisible(true);
17          setDefaultCloseOperation(3);
18  ?
19          Container container = this.getContentPane();
20  ?
21          JTextField textField1 = new JTextField("hello");
22          JTextField textField2 = new JTextField("world!");
23          container.add(textField2,BorderLayout.SOUTH);
24          container.add(textField1,BorderLayout.NORTH);
25      }
26  }

 package com.yycome.Swing_3;
 ?
 import javax.swing.*;
 import java.awt.*;
 ?
 //密码框
 public class TestJPasswordField {
     public static void main(String[] args) {
         new MyJPasswordField().init();
     }
 }
 class MyJPasswordField extends JFrame{
     public void init(){
         setBounds(100,100,500,400);
         setVisible(true);
         setDefaultCloseOperation(3);
 ?
         Container container = this.getContentPane();
 ?
         JPasswordField passwordField = new JPasswordField();
         passwordField.setEchoChar(‘*‘);
         container.add(passwordField);
     }
 }

 1  package com.yycome.Swing_2;
 2  ?
 3  import javax.swing.*;
 4  import java.awt.*;
 5  //带滚动条的面板
 6  public class TestJScrollPane {
 7      public static void main(String[] args) {
 8          new MyScrollPane().init();
 9      }
10  }
11  class MyScrollPane extends JFrame{
12      public void init(){
13          this.setBounds(100,100,300,200);
14          this.setVisible(true);
15          this.setDefaultCloseOperation(3);
16          Container container = this.getContentPane();
17  ?
18          JTextArea jTextArea = new JTextArea(50,10);
19          jTextArea.setText("hello");
20          JScrollPane jScrollPane = new JScrollPane(jTextArea);
21          //以下两行代码是有问题的！
22          //JScrollPane不能用add方法增加组件！！显示不出来！只能在定义的时候加组件！！
23          //！！难道？？！！！在swing中，只有容器才能add！！面板和窗口都不能add!!
24          //但是，panel面板可以add啊！很迷！
25  //        JScrollPane jScrollPane = new JScrollPane();
26  //        jScrollPane.add(jTextArea);
27          container.add(jScrollPane);
28      }
29  }