Day10(gui编程)

GUI学习

---

AWT

1. 创建第一个Frame（窗口）

    package cn.ljystudy.GUI.s1;
    ​
    import java.awt.*;
    ​
    /**
     * Gui的第一个窗口界面
     */
    public class frame {
        public static void main(String[] args) {
            //创建一个窗口
            Frame f1=new Frame("我的第一个窗口");
            //设置可见性
            f1.setVisible(true);
            //设置大小
            f1.setSize(100,100);
            //设置起始位置
            f1.setLocation(100,100);
            //设置背景颜色
            f1.setBackground(Color.BLUE);
            //设置不能拉伸
            f1.setResizable(false);
    ​
        }
    }
    ​

   实现效果图如左

通过封装实现多个窗口

 package cn.ljystudy.GUI.s1;
 ​
 import java.awt.*;
 ​
 /**
  * 使用封装来实现多个窗口的创建
  */
 public class MyFrame {
     public static void main(String[] args) {
     Framemould f1=new Framemould(100,100,100,100,new Color(12,123,12));
     Framemould f2=new Framemould(200,100,100,100,new Color(255,123,12));
     Framemould f3=new Framemould(100,200,100,100,new Color(255,255,12));
     Framemould f4=new Framemould(200,200,100,100,new Color(1,255,255));
     }
 }
 class Framemould extends Frame{
     //创建多个窗体需要计数
     static int id=0;
     Framemould(int x, int y, int width, int heigh, Color color){
         //super必须写在第一行
         super("这是我的窗口"+(++id));
 ​
         setBackground(color);
         //第一种方式
         //setLocation(x,y);
         //setSize(width,heigh);
         //第二种方式
         setBounds(x,y,width,heigh);
         setResizable(false);
         setVisible(true);
     }
 }
 ​

效果图如下：

2. 面板Panel（解决了窗口关闭的问题）

    package cn.ljystudy.GUI.s1;
    ​
    import java.awt.*;
    import java.awt.event.WindowAdapter;
    import java.awt.event.WindowEvent;
    import java.awt.event.WindowListener;
    ​
    /**
     * 学习面板
     */
    public class TestPanel {
        public static void main(String[] args) {
            //创建一个窗口
            Frame frame=new Frame("面板学习");
            //设置布局(使用了这个才可以在窗口上布局)
            frame.setLayout(null);
            //创建面板
            Panel panel=new Panel();
            //给窗口设置位子和大小和背景颜色
            frame.setBounds(100,100,500,500);
            frame.setBackground(new Color(150,150,150));
            //设置面板的位置和大小和背景颜色
            panel.setBounds(50,50,400,400);
            panel.setBackground(new Color(255,2,2));
            //将面板添加到窗口上
            frame.add(panel);
            //设置窗口的可见性
            frame.setVisible(true);
    ​
            //实现窗口的关闭
            //添加监听
            //监听有（适配器模式）
            frame.addWindowListener(new WindowAdapter() {
                @Override
                public void windowClosing(WindowEvent e) {
                    //结束程序
                    System.exit(0);
                }
            });
        }
    }
    ​

3. 布局管理

   • 流式布局

      package cn.ljystudy.GUI.s1;
      ​
      import java.awt.*;
      import java.awt.event.WindowAdapter;
      import java.awt.event.WindowEvent;
      ​
      public class TestFlowLayout {
          public static void main(String[] args) {
              Frame frame=new Frame("流式布局");
              //按钮组件 button
              Button b1=new Button("b1");
              Button b2=new Button("b2");
              Button b3=new Button("b3");
              Button b4=new Button("b4");
              Button b5=new Button("b5");
      ​
              //设置流式布局
              frame.setLayout(new FlowLayout(FlowLayout.RIGHT ));
      ​
              //设置大小
              frame.setSize(500,500);
              //设置可见
              frame.setVisible(true);
              //将按钮添加到窗体中
              frame.add(b1);
              frame.add(b2);
              frame.add(b3);
              frame.add(b4);
              frame.add(b5);
      ​
              //添加监听
              frame.addWindowListener(new WindowAdapter() {
                  @Override
                  public void windowClosing(WindowEvent e) {
                      System.exit(0);
                  }
              });
      ​
          }
      }

   • 东西南北中

      package cn.ljystudy.GUI.s1;
      ​
      import java.awt.*;
      import java.awt.event.WindowAdapter;
      import java.awt.event.WindowEvent;
      ​
      public class TestBorderLayout {
          public static void main(String[] args) {
              Frame frame=new Frame();
              //创建BorderLayout布局
               //frame.setLayout(new BorderLayout());
      ​
              //按钮组件 button
              Button b1=new Button("b1");
              Button b2=new Button("b2");
              Button b3=new Button("b3");
              Button b4=new Button("b4");
              Button b5=new Button("b5");
      ​
      ​
      ​
              //设置大小
              frame.setSize(500,500);
              //设置可见
              frame.setVisible(true);
              //将按钮添加到窗体中
              frame.add(b1,BorderLayout.CENTER);
              frame.add(b2,BorderLayout.NORTH);
              frame.add(b3,BorderLayout.WEST);
              frame.add(b4,BorderLayout.EAST);
              frame.add(b5,BorderLayout.SOUTH);
      ​
              //添加监听
              frame.addWindowListener(new WindowAdapter() {
                  @Override
                  public void windowClosing(WindowEvent e) {
                      System.exit(0);
                  }
              });
          }
      }

   • 表格Grid

      package cn.ljystudy.GUI.s1;
      ​
      import java.awt.*;
      import java.awt.event.WindowAdapter;
      import java.awt.event.WindowEvent;
      ​
      public class TestGridLayout {
          public static void main(String[] args) {
              Frame frame = new Frame();
      ​
              frame.setLayout(new GridLayout(2, 3));
              //按钮组件 button
              Button b1 = new Button("b1");
              Button b2 = new Button("b2");
              Button b3 = new Button("b3");
              Button b4 = new Button("b4");
              Button b5 = new Button("b5");
              Button b6 = new Button("b6");
      ​
              //设置大小
              frame.setSize(500, 500);
              //设置可见
              frame.setVisible(true);
              //将按钮添加到窗体中
              frame.add(b1);
              frame.add(b2);
              frame.add(b3);
              frame.add(b4);
              frame.add(b5);
              frame.add(b6);
              //frame.pack();//系统会选择最好的比例
              //添加监听
              frame.addWindowListener(new WindowAdapter() {
                  @Override
                  public void windowClosing(WindowEvent e) {
                      System.exit(0);
                  }
              });
      ​
          }
      }

     • 练习

        package cn.ljystudy.GUI.s1;
        ​
        import java.awt.*;
        ​
        public class Demo01 {
            public static void main(String[] args) {
                Frame frame = new Frame();
                frame.setLayout(new GridLayout(2,1));
                frame.setSize(500,500);
                frame.setLocation(100,100);
                frame.setVisible(true);
        ​
                //创建4个画板
                Panel panel=new Panel();
                Panel panel2=new Panel();
                Panel panel3=new Panel();
                Panel panel4=new Panel();
                
        ​
                //设置button
                Button b1=new Button("1");
                Button b2=new Button("2");
                Button b3=new Button("3");
                Button b4=new Button("4");
                Button b5=new Button("5");
                Button b6=new Button("6");
        ​
        ​
        ​
                //窗体的操作
                panel.setLayout(new BorderLayout());
                frame.add(panel);
                frame.add(panel2);
                //画板1的操作
                panel.add(b3,BorderLayout.EAST);
                panel.add(panel3,BorderLayout.CENTER);
                panel.add(b4,BorderLayout.WEST);
                //画板2
                panel2.setLayout(new BorderLayout());
                panel2.add(b5,BorderLayout.EAST);
                panel2.add(b6,BorderLayout.WEST);
        ​
                //画板3
                panel3.setLayout(new GridLayout(2,1));
                panel3.add(b1);
                panel3.add(b2);
                //画板4
                panel4.setLayout(new GridLayout(2,2));
                for(int i=0;i<4;i++){
                    panel4.add(new Button("b"+i));
                }
                panel2.add(panel4,BorderLayout.CENTER);
        ​
            }
        }
        ​

4. 监听

    package cn.ljystudy.GUI.s2;
    ​
    import java.awt.*;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.awt.event.WindowAdapter;
    import java.awt.event.WindowEvent;
    ​
    public class Listener01 {
        public static void main(String[] args) {
            Frame frame = new Frame();
            Button button = new Button();
    ​
            frame.setVisible(true);
            frame.setSize(500,500);
            frame.setLocation(100,100);
            frame.add(button);
            //添加一个监听
            button.addActionListener(new MyListener());
            //添加一个关闭方法
            closed(frame);
        }
        public static void closed(Frame frame){
            frame.addWindowListener(new WindowAdapter() {
                @Override
                public void windowClosing(WindowEvent e) {
                    System.exit(0);
                }
            });
        }
    }
    class MyListener implements ActionListener{
        @Override
        public void actionPerformed(ActionEvent e) {
            System.out.println("我按了一下");
        }
    }

实现多个按钮使用一个监听

package cn.ljystudy.GUI.s2;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class Listener02 {
    public static void main(String[] args) {
        Frame frame = new Frame();
        frame.setLayout(new FlowLayout());
        Button button = new Button("star");
        Button button1 = new Button("stop");


        frame.setVisible(true);
        frame.setSize(500,500);
        frame.setLocation(100,100);
        frame.add(button);
        frame.add(button1);

        //添加一个监听
        button.addActionListener(new imper());
        button1.addActionListener(new imper());

        //添加一个关闭方法
        closed(frame);
    }
    public static void closed(Frame frame){
        frame.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }
}
class imper implements ActionListener{

    @Override
    public void actionPerformed(ActionEvent e) {

        System.out.println(e.getActionCommand());//如果没有设置按钮的getActionCommand值，那就得到label值
        if(e.getActionCommand().equals("star")){
            System.out.println("开始运行");
        }
    }
}

TextField的监听

package cn.ljystudy.GUI.s2;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class TextListener {
    public static void main(String[] args) {
    //启动
        new MyFrame();
    }

}
class MyFrame extends Frame{
    MyFrame(){
        TextField textField = new TextField();
        add(textField);
        //按下enter会触发这个文本框的事件
        textField.addActionListener(new Listener());
        setVisible(true);
        pack();
        textField.setEchoChar('*');//将输入的文本用*去代替
    }
}
//实现监听类
class Listener implements ActionListener {

    @Override
    public void actionPerformed(ActionEvent e) {
        TextField field=(TextField) e.getSource();
        System.out.println(field.getText());//获取文本的内容
        field.setText("");//讲文本重置
    }
}

• 简易加法计算器

  package cn.ljystudy.GUI.s2;
  
  import java.awt.*;
  import java.awt.event.ActionEvent;
  import java.awt.event.ActionListener;
  
  import static javax.print.attribute.standard.MediaSizeName.A;
  
  public class Demo1 {
      public static void main(String[] args) {
          //只写启动
          new MyFrame1();
      }
  
  }
  class MyFrame1 extends Frame{
      MyFrame1(){
          setLayout(new FlowLayout());
          TextField t1=new TextField();
          TextField t2=new TextField();
          TextField t3=new TextField();
          Label l=new Label("+");
          Button b=new Button("=");
  
          add(t1);
          add(l);
          add(t2);
          add(b);
          b.addActionListener(new MyA(t1,t2,t3));
          add(t3);
  
          setVisible(true);
          pack();
  
      }
  }
  class MyA implements ActionListener{
      private TextField t1,t2,t3;
      MyA(TextField t1,TextField t2,TextField t3){
          this.t1=t1;
          this.t2=t2;
          this.t3=t3;
      }
      @Override
      public void actionPerformed(ActionEvent e) {
          //拿到加数和被加数
          int i=Integer.parseInt(t1.getText());
          int j=Integer.parseInt(t2.getText());
          //相加放到第三
          t3.setText(""+(i+j));
          //清空1，2
          t1.setText("");
          t2.setText("");
      }
  }

• 使用组合

  package cn.ljystudy.GUI.s2;
  
  import java.awt.*;
  import java.awt.event.ActionEvent;
  import java.awt.event.ActionListener;
  
  import static javax.print.attribute.standard.MediaSizeName.A;
  
  public class Demo1 {
      public static void main(String[] args) {
          //只写启动
          new MyFrame1().Frame1load();
      }
  
  }
  class MyFrame1 extends Frame{
      //属性
      TextField t1,t2,t3;
      Label l;
      Button b;
  
      //方法
      public  void Frame1load(){
  
          t1=new TextField();
          t2=new TextField();
          t3=new TextField();
          l=new Label("+");
          b=new Button("=");
  
          setLayout(new FlowLayout());
          add(t1);
          add(l);
          add(t2);
          add(b);
          b.addActionListener(new MyA(this));
          add(t3);
  
          setVisible(true);
          pack();
  
      }
  }
  class MyA implements ActionListener{
      private MyFrame1 myFrame1=null;
      MyA(MyFrame1 myframe1){
          this.myFrame1=myframe1;
  
  
      }
      @Override
      public void actionPerformed(ActionEvent e) {
          //拿到加数和被加数
          //相加放到第三
          //清空1，2
          int i=Integer.parseInt(myFrame1.t1.getText());
          int j=Integer.parseInt(myFrame1.t2.getText());
          myFrame1.t3.setText(""+(i+j));
          myFrame1.t1.setText("");
          myFrame1.t2.setText("");
  
      }
  }

• 使用内部类

  package cn.ljystudy.GUI.s2;
  
  import java.awt.*;
  import java.awt.event.ActionEvent;
  import java.awt.event.ActionListener;
  
  import static javax.print.attribute.standard.MediaSizeName.A;
  
  public class Demo1 {
      public static void main(String[] args) {
          //只写启动
          new MyFrame1().Frame1load();
      }
  
  }
  class MyFrame1 extends Frame{
      //属性
      TextField t1,t2,t3;
      Label l;
      Button b;
  
      //方法
      public  void Frame1load(){
  
          t1=new TextField();
          t2=new TextField();
          t3=new TextField();
          l=new Label("+");
          b=new Button("=");
  
          setLayout(new FlowLayout());
          add(t1);
          add(l);
          add(t2);
          add(b);
          b.addActionListener(new MyA());
          add(t3);
  
          setVisible(true);
          pack();
  
      }
      private class MyA implements ActionListener{
  
          @Override
          public void actionPerformed(ActionEvent e) {
              //拿到加数和被加数
              //相加放到第三
              //清空1，2
              int i=Integer.parseInt(t1.getText());
              int j=Integer.parseInt(t2.getText());
              t3.setText(""+(i+j));
              t1.setText("");
              t2.setText("");
  
          }
      }
  }

5. 画笔

   package cn.ljystudy.GUI.s2;
   
   import java.awt.*;
   
   public class pen {
       public static void main(String[] args) {
           new Mypen().FrameLoading();
       }
   
   }
   class Mypen extends Frame{
       void FrameLoading(){
           setVisible(true);
           setSize(500,500);
           //pack();
       }
       @Override
       public void paint(Graphics g) {
           //将最开始画笔的颜色保存下来
           Color M=g.getColor();
           g.setColor(Color.BLUE);
           g.drawRoundRect(100,100,100,100,20,20);
           g.drawOval(200,200,100,100);
           g.fillOval(300,200,100,100);
           g.fillOval(200,300,100,100);
           g.setColor(M);
       }
   }

   • 画笔练习

     package cn.ljystudy.GUI.s2;
     
     import java.awt.*;
     import java.awt.event.MouseAdapter;
     import java.awt.event.MouseEvent;
     import java.util.ArrayList;
     import java.util.Iterator;
     
     public class lianxi {
         public static void main(String[] args) {
             new Myframe11("画图");
         }
     }
     class Myframe11 extends Frame {
         ArrayList point;
     
         Myframe11(String i){
             super(i);
             setBounds(100,100,500,500);
             setVisible(true);
             this.addMouseListener(new MouseLis() );
             point=new ArrayList<>();
         }
         @Override
         public void paint(Graphics g) {
             Iterator it = point.iterator();
             while(it.hasNext()){
                 Point p =(Point)it.next();
                 g.setColor(Color.BLUE);
                 g.fillOval(p.x,p.y,10,10);
     
             }
     
         }
         public void addPoint(Point p){
             point.add(p);
         }
         private   class MouseLis extends MouseAdapter {
             @Override
             public void mouseClicked(MouseEvent e) {
                 Myframe11 myframe11=(Myframe11) e.getSource();
     
     
                 addPoint(new Point(e.getX(),e.getY()));
                 repaint();
     
             }
         }
     }

• 窗口监听

     package cn.ljystudy.GUI.s2;
     
     import java.awt.*;
     import java.awt.event.WindowAdapter;
     import java.awt.event.WindowEvent;
     import java.awt.event.WindowListener;
     
     public class WindowLisenter {
         public static void main(String[] args) {
             new MyFrameFirst();
         }
     
     }
     class MyFrameFirst extends Frame{
         public MyFrameFirst()  {
     
             setVisible(true);
             setBounds(100,100,500,500);
             //this.addWindowListener(new WindowLis());
             this.addWindowListener(new WindowAdapter() {
                 @Override
                 public void windowClosing(WindowEvent e) {
                     System.exit(0);
                 }
     
                 @Override
                 public void windowActivated(WindowEvent e) {
     
                     setTitle("窗口已被激活");
                 }
     
             });
         }
         class WindowLis extends WindowAdapter{
     
     
             @Override
             public void windowClosing(WindowEvent e) {
                 System.exit(0);
     
             }
     
     
     
             @Override
             public void windowActivated(WindowEvent e) {
                 MyFrameFirst myFrameFirst=(MyFrameFirst) e.getSource();
                 setTitle("窗口已被激活");
             }
         }
     }

• 键盘监听

     package cn.ljystudy.GUI.s2;
     
     import java.awt.*;
     import java.awt.event.KeyAdapter;
     import java.awt.event.KeyEvent;
     
     public class KeyListener {
         public static void main(String[] args) {
             new KeyFrame();
         }
         static class KeyFrame extends Frame{
             int y=150;
             @Override
             public void paint(Graphics g) {
                 g.fillOval(150,y,20,20);
     
             }
     
             public KeyFrame(){
                 setVisible(true);
                 setBounds(100,100,500,500);
                 addKeyListener(new KeyAdapter() {
                     @Override
                     public void keyPressed(KeyEvent e) {
                         int CodeKey=e.getKeyCode();
                         if(CodeKey==KeyEvent.VK_UP){
                             y-=10;
                             System.out.println("我按了上键");
                             repaint();
                         }
                     }
     
                 });
     
            }
     
         }
     }

   

Swing

1. 第一个JFrame窗口

package cn.ljystudy.GUI.s3;

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

public class JFrameApplication {
    public static void main(String[] args) {
        //启动init()
        new JFrameApplication().init();
    }
    public void init(){
        JFrame jf=new JFrame("这是我的第一个JFrame窗口");
        jf.setBounds(100,100,500,500);
        jf.setVisible(true);
        JLabel jLabel=new JLabel("欢迎来到我的频道！");

        jLabel.setHorizontalAlignment(SwingConstants.CENTER);
        jf.add(jLabel);
        Container contentPane = jf.getContentPane();
        contentPane.setBackground(Color.BLUE);
        jf.setBackground(Color.BLUE);
        //窗口关闭
        jf.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
}

 

2. 弹窗 JDialog

用于窗口的弹窗，有默认的关闭窗口事件

package cn.ljystudy.GUI.s3;

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

public class JDialogApplication extends JFrame {

    public void init(){
        setTitle("我的的二个JFrame窗口");
        setBounds(100,100,500,500);
        setVisible(true);
        this.setLayout(null);
        JButton jButton=new JButton("弹出一个新窗口");
        jButton.setBounds(200,200,150,50);
        Container contentPane = this.getContentPane();
        contentPane.add(jButton);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        jButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                   new MyDialog();
            }
        });


    }

    public static void main(String[] args) {
        new JDialogApplication().init();
    }
    class MyDialog extends JDialog{
        public MyDialog() {
            setTitle("我是一个弹出来的窗口");
            setVisible(true);
            setLayout(null);//绝对布局
            setBounds(200,200,500,500);
        }
    }
}

 

3. 标签

• 图片icon

  package cn.ljystudy.GUI.s3;
  
  import javax.swing.*;
  import java.awt.*;
  import java.net.URL;
  
  public class IConApplication extends JFrame  {
      public IConApplication() {
          //获取图片的地址
          JLabel jLabel = new JLabel("我是一个标签");
          URL url = IConApplication.class.getResource("sl.jpg");//先获取图片资源的地址
          ImageIcon imageIcon = new ImageIcon(url);//在生成一个ImageIcon的对象
          
          jLabel.setIcon(imageIcon);//在将对象赋给标签
        //  jLabel.setSize(50,50);这里没办法使用setsize来控制图片的大小
          jLabel.setHorizontalAlignment(SwingConstants.CENTER);//将Jlabel放在中间的位置
          Container container = this.getContentPane();//获取容器
  
          container.add(jLabel);
  
          this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
          setVisible(true);
          setBounds(100,100,500,500);
      }
  
      public static void main(String[] args) {
          new IConApplication();
      }
  }

   

4. 面板

• JPanel

package cn.ljystudy.GUI.s3;

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

public class JPanelApplicaiton extends JFrame {
    public JPanelApplicaiton() {
        //JFrame的属性
        this.setVisible(true);
        this.setSize(500,500);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        //JFrame的操作都在容器中进行先获取容器
        Container container = this.getContentPane();
        //然后设置容器的布局
        container.setLayout(new GridLayout(2,2,10,10));
        //然后添加画板
        JPanel jp1 = new JPanel(new GridLayout(1,2,1,1));
        JPanel jp2 = new JPanel(new GridLayout(2,2,1,1));
        JPanel jp3 = new JPanel(new GridLayout(2,1,1,1));
        JPanel jp4 = new JPanel(new GridLayout(3,1,1,1));

        //添加按钮
        JButton jB1 = new JButton("b1");
        JButton jB2 = new JButton("b1");
        JButton jB3 = new JButton("b1");
        for (int i=0;i<4;i++){
            jp2.add(new JButton("b2"));
        }
        for (int i=0;i<2;i++){
            jp3.add(new JButton("b3"));
        }
        for (int i=0;i<3;i++){
            jp4.add(new JButton("b4"));
        }

        //将按钮添加到画板中
        jp1.add(jB1);
        jp1.add(jB2);
        jp1.add(jB3);

        //将画板加到JFrame中
        container.add(jp1);
        container.add(jp2);
        container.add(jp3);
        container.add(jp4);
    }

    public static void main(String[] args) {
        new JPanelApplicaiton();
    }
}

• JScrollPane(带滚动条的面板)

package cn.ljystudy.GUI.s3;

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

public class JScrollPaneApplication extends JFrame {
    public JScrollPaneApplication() {
        this.setBounds(100,100,100,100);
        this.setVisible(true);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        Container contentPane = this.getContentPane();
        //文本域
        JTextArea jt = new JTextArea(20,50);
        jt.setText("hello,world");

        JScrollPane JscrollPane = new JScrollPane(jt);
        contentPane.add(JscrollPane);
       
    }

    public static void main(String[] args) {
        new JScrollPaneApplication();
    }
}

5.按钮

• JButton

package cn.ljystudy.GUI.s3;

import javax.swing.*;
import java.awt.*;
import java.net.URL;

public class JButtonApplication extends JFrame {
    public JButtonApplication() {
        Container contentPane = this.getContentPane();

        URL url1 = JButtonApplication.class.getResource("sl.jpg");
        ImageIcon iI= new ImageIcon(url1);
        JButton jb = new JButton("图片按钮");
        jb.setIcon(iI);
        jb.setToolTipText("这是一个图片按钮");

        contentPane.add(jb);

        this.setBounds(100,100,500,500);
        this.setVisible(true);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

    public static void main(String[] args) {
        new JButtonApplication();
    }
}

• 单选按钮

package cn.ljystudy.GUI.s3;

import javax.swing.*;
import java.awt.*;
import java.net.URL;

public class JButtonApplication2 extends JFrame {
    public JButtonApplication2() {
        Container contentPane = this.getContentPane();

        URL url1 = JButtonApplication2.class.getResource("sl.jpg");
        ImageIcon iI= new ImageIcon(url1);

        JRadioButton jrb1 = new JRadioButton("jrb1");
        JRadioButton jrb2 = new JRadioButton("jrb2");
        JRadioButton jrb3 = new JRadioButton("jrb3");
        ButtonGroup bg = new ButtonGroup();//单选按钮需要一个组来装，因为一个组里只能选择以一个
        bg.add(jrb1);
        bg.add(jrb2);
        bg.add(jrb3);

        contentPane.add(jrb1,BorderLayout.NORTH);
        contentPane.add(jrb2,BorderLayout.CENTER);
        contentPane.add(jrb3,BorderLayout.SOUTH);


        this.setBounds(100,100,500,500);
        this.setVisible(true);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

    public static void main(String[] args) {
        new JButtonApplication2();
    }
}

• 复选按钮

package cn.ljystudy.GUI.s3;

import javax.swing.*;
import java.awt.*;
import java.net.URL;

public class JButtonApplication2 extends JFrame {
    public JButtonApplication2() {
        Container contentPane = this.getContentPane();

        URL url1 = JButtonApplication2.class.getResource("sl.jpg");
        ImageIcon iI= new ImageIcon(url1);

        JCheckBox jcb1 = new JCheckBox("jrb1");
        JCheckBox jcb2 = new JCheckBox("jrb2");
        JCheckBox jcb3 = new JCheckBox("jrb3");
       

        contentPane.add(jcb1,BorderLayout.NORTH);
        contentPane.add(jcb2,BorderLayout.CENTER);
        contentPane.add(jcb3,BorderLayout.SOUTH);


        this.setBounds(100,100,500,500);
        this.setVisible(true);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

    public static void main(String[] args) {
        new JButtonApplication2();
    }
}

6.列表

• 下拉框

package cn.ljystudy.GUI.s4;

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

public class JComBoBoxApplication extends JFrame{
    public JComBoBoxApplication() {
        Container container = this.getContentPane();
        JComboBox jcb = new JComboBox();
        jcb.addItem(null);
        jcb.addItem("1");
        jcb.addItem("3");
        jcb.addItem("2");

        container.add(jcb);

        this.setVisible(true);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        this.setBounds(100,100,500,500);
    }

    public static void main(String[] args) {
        new JComBoBoxApplication();
    }
}

• 列表框

package cn.ljystudy.GUI.s4;

import javax.swing.*;
import java.awt.*;
import java.util.ArrayList;
import java.util.Vector;

public class JListApplication extends JFrame {
    public JListApplication()  {
        Container container = this.getContentPane();

        Vector a=new Vector();
        JList jList = new JList(a);
        a.add("1");
        a.add("2");

        container.add(jList);
        this.setVisible(true);
        this.setBounds(100,100,1000,1000);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new JListApplication();
    }
}

7.文本框

• 文本框

package cn.ljystudy.GUI.s4;

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

public class JTextFileApplication extends JFrame {
    public JTextFileApplication() {
        Container container = this.getContentPane();
        JTextField jtf = new JTextField("hello");
        JTextField jtf1 = new JTextField("world");

        container.add(jtf,BorderLayout.NORTH);
        container.add(jtf1,BorderLayout.SOUTH);

        this.setVisible(true);
        this.setBounds(100,100,500,500);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);


    }

    public static void main(String[] args) {
        new JTextFileApplication();
    }
}

 

• 密码框

package cn.ljystudy.GUI.s4;

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

public class JPasswordFieldApplication extends JFrame {
    public JPasswordFieldApplication() {
        Container container = this.getContentPane();
        JPasswordField jpf = new JPasswordField();
       jpf.setEchoChar('*');//这里默认的密码遮挡是······set之后为***
        container.add(jpf);

        this.setVisible(true);
        this.setBounds(100,100,500,500);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new JPasswordFieldApplication();
    }
}