GUI编程

告诉大家该怎么学？

这是什么?
它怎么玩？
该如何去我们平时运用？

组件
窗口
弹窗
面板
文本框
列表框
按钮
图片
监听事件
鼠标
键盘事件
破解工具

1、简介

GUi的核心技术：Swing AWT

因为界面不美观
需要jre环境

为什么我们要学习？

可以写出自己心中想要的一些小工具
工作时候，也可能需要维护到Swing界面，概率极小
了解MVC架构，了解监听！

2、AWT

2.1、Awt介绍

包含了很多类和接口
元素：窗口，按钮，文本框
java.awt

2.2 组件和容器

1、Frame

package com.love.lesson01;

import java.awt.*;

public class TestFrame {

    public static void main(String[] args) {

        //Frame的意思是框架

        Frame frame = new Frame("11111");

        //设置可见性

        frame.setVisible(true);

        //设置窗口大小

        frame.setSize(400,400);

        //设置背景颜色

        frame.setBackground(new Color(203, 10, 10, 255));

        //弹出的初始位置

        frame.setLocation(200,200);

        //设置大小固定

        frame.setResizable(false);

    }

}

问题：发现窗口关闭不掉，停止java程序！

尝试回顾封装

package com.love.lesson01;

import java.awt.*;

public class TestFrame02 {

    public static void main(String[] args) {

        new MyFrame(100,100,200,200,Color.yellow);

        new MyFrame(300,100,200,200,Color.blue);

        new MyFrame(100,300,200,200,Color.green);

        new MyFrame(300,300,200,200,Color.magenta);

    }

}

class MyFrame extends Frame{

    static int id = 0;//可能存在多个窗口，这是一个计数器

    public MyFrame(int x, int y, int w, int h, Color color){

        super("MyFrame"+(++id));

        setBackground(color);

        setBounds(x,y,w,h);

        setVisible(true);

        setResizable(false);

    }

}

2、面板Panel

解决了关闭事件！

package com.love.lesson01;

import java.awt.*;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

//可以看成一个空间，但是不能单独存在

public class TestPanel {

    public static void main(String[] args) {

        Frame frame = new Frame();

        //布局的概念

        Panel panel = new Panel();

        //设置布局

        frame.setLayout(null);

        //坐标

        frame.setBounds(300,300,500,500);

        frame.setBackground(new Color(106, 232, 30));

        //panel设置坐标，相对于frame

        panel.setBounds(50,50,400,400);

        panel.setBackground(new Color(233, 10, 10));

        frame.add(panel);

        frame.setVisible(true);

        //frame.setResizable(false); //默认是true，可变大小的

        //监听事件，监听窗口关闭事件 System.exit(0)

        //适配器模式：

        frame.addWindowListener(new WindowAdapter() {

            @Override

            public void windowClosing(WindowEvent e) {

                System.exit(0);

            }

        });

    }

}

2.3、布局管理器

流式布局

package com.love.lesson01;

import java.awt.*;

public class TestFlowLayout {

    public static void main(String[] args) {

        Frame frame = new Frame();

        //组件

        Button button1 = new Button("button1");

        Button button2 = new Button("button2");

        Button button3 = new Button("button3");

        //设置为流式布局

        //frame.setLayout(new FlowLayout());

        //frame.setLayout(new FlowLayout(FlowLayout.LEFT));

        frame.setLayout(new FlowLayout(FlowLayout.RIGHT));

        frame.setSize(400,400);

        //把按钮添加上去

        frame.add(button1);

        frame.add(button2);

        frame.add(button3);

        frame.setVisible(true);

    }

}

东西南北中

package com.love.lesson01;

import java.awt.*;

//边框布局

public class TestBorderLayout {

    public static void main(String[] args) {

        Frame frame = new Frame("TestBorderLayout");

        Button east = new Button("East");

        Button west = new Button("West");

        Button south = new Button("South");

        Button north = new Button("North");

        Button center = new Button("Center");

        frame.add(east,BorderLayout.EAST);

        frame.add(west,BorderLayout.WEST);

        frame.add(south,BorderLayout.SOUTH);

        frame.add(north,BorderLayout.NORTH);

        frame.add(center,BorderLayout.CENTER);

        frame.setSize(400,400);

        frame.setVisible(true);

    }

}

表格布局

package com.love.lesson01;

import java.awt.*;

//网格布局

public class TestGridLayout {

    public static void main(String[] args) {

        Frame frame = new Frame("TestGridLayout");

        //六个按钮

        Button btn1 = new Button("btn1");

        Button btn2 = new Button("btn2");

        Button btn3 = new Button("btn3");

        Button btn4 = new Button("btn4");

        Button btn5 = new Button("btn5");

        Button btn6 = new Button("btn6");

        //设置布局

        frame.setLayout(new GridLayout(3,2));

        //增加按钮

        frame.add(btn1);

        frame.add(btn2);

        frame.add(btn3);

        frame.add(btn4);

        frame.add(btn5);

        frame.add(btn6);

        frame.pack();//Java函数

        //设置可见性

        frame.setVisible(true);

    }

}

作业：

package com.love.homework;

import java.awt.*;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

public class Test01 {

    public static void main(String[] args) {

        //框架设置

        Frame frame = new Frame("Test01");

        frame.setSize(400,300);

        frame.setLocation(300,400);

        frame.setBackground(Color.BLACK);

        frame.setVisible(true);

        frame.setLayout(new GridLayout(2,1));

        //4个面板

        Panel p1 = new Panel(new BorderLayout());

        Panel p2 = new Panel(new GridLayout(2,1));

        Panel p3 = new Panel(new BorderLayout());

        Panel p4 = new Panel(new GridLayout(2,2));

        //Button button = new Button("00");

        //button.setBackground(Color.BLUE);

        p1.add(new Button("East-1"),BorderLayout.EAST);

        p1.add(new Button("West-1"),BorderLayout.WEST);

        //p2放两个按钮

        p2.add(new Button("p2-btn-1"));

        //p2.add(button);

        p2.add(new Button("p2-btn -2"));

        //再把p2面板放p1面板中间

        p1.add(p2,BorderLayout.CENTER);

        //下面

        p3.add(new Button("East-2"),BorderLayout.EAST);

        p3.add(new Button("West-2"),BorderLayout.WEST);

        //p4放4个按钮

        for (int i = 0; i < 4; i++) {

            p4.add(new Button("for-"+i));

        }

        //再把p4面板放p3面板中间

        p3.add(p4,BorderLayout.CENTER);

        //把两个面板放进框架中

        frame.add(p1);

        frame.add(p3);

        //监听事件，监听窗口关闭事件 System.exit(0)

        //适配器模式：

        frame.addWindowListener(new WindowAdapter() {

            @Override

            public void windowClosing(WindowEvent e) {

                System.exit(0);

            }

        });

    }

}

总结:

Frame是一个顶级窗口
Panel无法单独显示，必须添加到某个容器中。
布局管理器
1. 流式
2. 东西南北中
3. 表格

4.大小，定位，背景颜色，可见性，监听!

2.4、事件监听

事件监听：当某个事情发生的时候，干什么？

package com.love.lesson02;

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 TestActionEvent {

    public static void main(String[] args) {

        Frame frame = new Frame();

        Button button = new Button("button");

        //因为,addActionListener()需要一个ActionListener,所以我们需要构造一个ActionListener

        ActionListener actionListener = new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                System.out.println("aaa");

            }

        };

        button.addActionListener(actionListener);

        frame.add(button,BorderLayout.CENTER);

        frame.setBounds(400,400,300,300);

        frame.pack();

        windowClose(frame);

        frame.setVisible(true);

    }

    public static void windowClose(Frame frame){

        frame.addWindowListener(new WindowAdapter() {

            @Override

            public void windowClosing(WindowEvent e) {

                System.exit(0);

            }

        });

    }

}

多个按钮共享一个事件

package com.love.lesson02;

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 TestActionTwo {

    public static void main(String[] args) {

        Frame frame = new Frame("开始-停止");

        Button button1 = new Button("start");

        Button button2 = new Button("stop");

        button1.setActionCommand("button-1-");

        MyMonitor myMonitor = new MyMonitor();

        button1.addActionListener(myMonitor);

        button2.addActionListener(myMonitor);

        frame.add(button1,BorderLayout.NORTH);

        frame.add(button2,BorderLayout.SOUTH);

        frame.pack();//自适应大小按钮

        windowClose(frame); //关闭窗口

        frame.setVisible(true);//可见性

    }

    //监听事件，监听窗口关闭事件 System.exit(0)

    //适配器模式：

    public static void windowClose(Frame frame){

        frame.addWindowListener(new WindowAdapter() {

            @Override

            public void windowClosing(WindowEvent e) {

                System.exit(0);

            }

        });

    }

}

class MyMonitor implements ActionListener{

    @Override

    public void actionPerformed(ActionEvent e) {

        //获得按钮点击信息

        String message = e.getActionCommand();

        System.out.println("按钮被点击了:"+e.getActionCommand());

    }

}

2.5、输入框TextField监听

package com.love.lesson02;

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 TextText01 {

    public static void main(String[] args) {

        //启动

        new MyFrame();

    }

}

//我的框架对象

class MyFrame extends Frame{

    public MyFrame(){

        TextField textField = new TextField();//一行文本框

        //因为是继承frame,所以不用加Frame. 直接用Frame里面的方法

        add(textField);

        MyActionListener2 myActionListener2 = new MyActionListener2();

        textField.addActionListener(myActionListener2);

        //设置替换编码

        textField.setEchoChar('*');

        setLocation(500,500);

        windowClose();

        pack();

        setVisible(true);

    }

    //关闭窗口

    public void windowClose(){

        addWindowListener(new WindowAdapter() {

            @Override

            public void windowClosing(WindowEvent e) {

                System.exit(0);

            }

        });

    }

}

//我的动作监听器

class MyActionListener2 implements ActionListener{

    @Override

    public void actionPerformed(ActionEvent e) {

        TextField field = (TextField) e.getSource();//获取一些资源,返回的一个对象

        System.out.println(field.getText());//获取输入文本信息

        field.setText("");//回车一次清空一次文本框

    }

}

2.6、简易计算器，组合+内部类回顾复习

oop原则：组合，大于继承！

package com.love.lesson02;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

/*

//简易计算器_组合方式

public class TestCalc {

    public static void main(String[] args) {

        new Calculator();

    }

}

//计算器类

class Calculator extends Frame{

    public Calculator(){

        //三个文本框

        TextField num1 = new TextField(10);//最多字符数

        TextField num2 = new TextField(10);

        TextField num3 = new TextField(20);

        //一个按钮

        Button button = new Button("=");

        //增加按钮监听事件

        button.addActionListener(new MyCalculatorListener(num1,num2,num3));

        //一个标签

        Label label = new Label("+");

        add(num1);

        add(label);

        add(num2);

        add(button);

        add(num3);

        //布局

        setLayout(new FlowLayout());

        pack();

        setVisible(true);

    }

}

//监听器类  动作监听器

class MyCalculatorListener implements ActionListener{

    //获取三个变量

    private TextField num1,num2,num3;

    public MyCalculatorListener(TextField num1,TextField num2,TextField num3){

        this.num1 = num1;

        this.num2 = num2;

        this.num3 = num3;

    }

    @Override

    public void actionPerformed(ActionEvent e) {

        //1.获得加数和被加数

        int n1 = Integer.parseInt(num1.getText());

        int n2 = Integer.parseInt(num2.getText());

        //2.将这个值+法运算后,放到第三个框

        num3.setText(""+(n1+n2));

        //3.清除前两个框

        num1.setText("");

        num2.setText("");

    }

}*/

//--------------------------------------------------------------------

/*

//简易计算器_完全改造为面向对象写法

public class TestCalc {

    public static void main(String[] args) {

        new Calculator();

    }

}

//计算器类

class Calculator extends Frame{

    //属性

    TextField num1,num2,num3;

    public Calculator(){

        //三个文本框

        num1 = new TextField(10);//最多字符数

        num2 = new TextField(10);

        num3 = new TextField(20);

        //一个按钮

        Button button = new Button("=");

        //增加按钮监听事件

        button.addActionListener(new MyCalculatorListener(this));

        //一个标签

        Label label = new Label("+");

        add(num1);

        add(label);

        add(num2);

        add(button);

        add(num3);

        //布局

        setLayout(new FlowLayout());

        pack();

        setVisible(true);

    }

}

//监听器类  动作监听器

class MyCalculatorListener implements ActionListener{

    //获取计算器这个对象,在一个类中组合成为另一个类

    Calculator calculator = null;

    public MyCalculatorListener(Calculator calculator){

        this.calculator = calculator;

    }

    @Override

    public void actionPerformed(ActionEvent e) {

        //1.获得加数和被加数

        int n1 = Integer.parseInt(calculator.num1.getText());

        int n2 = Integer.parseInt(calculator.num2.getText());

        //2.将这个值+法运算后,放到第三个框

        calculator.num3.setText(""+(n1+n2));

        //3.清除前两个框

        calculator.num1.setText("");

        calculator.num2.setText("");

    }

}

*/

//--------------------------------------------------------------------

//简易计算器_内部类

public class TestCalc {

    public static void main(String[] args) {

        new Calculator().loadFrame();

    }

}

//计算器类

class Calculator extends Frame{

    //属性

    TextField num1,num2,num3;

    public void loadFrame(){

        //三个文本框

        num1 = new TextField(10);//最多字符数

        num2 = new TextField(10);

        num3 = new TextField(20);

        //一个按钮

        Button button = new Button("=");

        //增加按钮监听事件

        button.addActionListener(new MyCalculatorListener());

        //一个标签

        Label label = new Label("+");

        add(num1);

        add(label);

        add(num2);

        add(button);

        add(num3);

        //布局

        setLayout(new FlowLayout());

        pack();

        setVisible(true);

    }

    //监听器类  动作监听器

    //内部类最大的好处,就是可以畅通无阻的访问外部的属性和方法

    private class MyCalculatorListener implements ActionListener{

        @Override

        public void actionPerformed(ActionEvent e) {

            //1.获得加数和被加数

            int n1 = Integer.parseInt(num1.getText());

            int n2 = Integer.parseInt(num2.getText());

            //2.将这个值+法运算后,放到第三个框

            num3.setText(""+(n1+n2));

            //3.清除前两个框

            num1.setText("");

            num2.setText("");

        }

    }

}

2.7、画笔

package com.love.lesson03;

import java.awt.*;

public class TestPaint {

    public static void main(String[] args) {

        new MyPaint().loadFrame();

    }

}

class MyPaint extends Frame {

    public void loadFrame(){

        setBounds(200,200,600,500);

        setVisible(true);

    }

    @Override

    public void paint(Graphics g) {

        //画笔,需要有颜色,画笔可以画画

        g.setColor(Color.red);

        g.fillOval(100,100,100,100);

        g.setColor(Color.GREEN);

        g.fillRect(150,200,200,200);

        //养成习惯,画笔用完将他还原到最初的颜色

        g.setColor(Color.BLACK);

    }

}

2.8、鼠标监听

目的：想要实现鼠标画画！

package com.love.lesson03;

import java.awt.*;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.util.ArrayList;

import java.util.Iterator;

//鼠标监听事件

public class TestMouseListener {

    public static void main(String[] args) {

        new MyFrame("画图");

    }

}

//自己的类

class MyFrame extends Frame {

    //画画需要画笔,需要监听鼠标当前的位置,需要集合来存储这个点

    ArrayList points;

    public MyFrame(String title){

        super(title);

        setBounds(200,200,400,400);

        //存储鼠标的点

        points = new ArrayList<>();

        setVisible(true);

        //鼠标监听器,正对这个窗口

        this.addMouseListener(new MyMouseListener());

    }

    @Override

    public void paint(Graphics g) {

        //画画,监听鼠标的事件

        Iterator iterator = points.iterator();

        while(iterator.hasNext()){

            Point point = (Point)iterator.next();

            g.setColor(Color.BLUE);

            g.fillOval(point.x,point.y,10,10);

        }

    }

    //添加一个点到界面

    public void addPaint(Point point){

        points.add(point);

    }

    //适配器模式

    private class MyMouseListener extends MouseAdapter{

        //鼠标 按下,弹起,按住不放

        @Override

        public void mousePressed(MouseEvent e) {

            MyFrame frame = (MyFrame)e.getSource();

            frame.addPaint(new Point(e.getX(),e.getY()));

            //每次点击鼠标都需要重新画一遍

            //frame.repaint();//刷新

        }

    }

}

2.9、窗口监听

package com.love.lesson03;

import java.awt.*;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

//窗口监听

public class TestWindow {

    public static void main(String[] args) {

        new WindowFrame();

    }

}

class WindowFrame extends Frame{

    public WindowFrame(){

        setBackground(Color.BLUE);

        setBounds(100,100,200,200);

        setVisible(true);

        addWindowListener(

                //匿名内部类

         new WindowAdapter() {

             //关闭窗口

            @Override

            public void windowClosing(WindowEvent e) {

                System.out.println("WindowClosing");

                System.exit(0);

            }

            //激活窗口

            @Override

            public void windowActivated(WindowEvent e) {

                WindowFrame source = (WindowFrame)e.getSource();

                source.setTitle("被激活了");

                System.out.println("windowActivated");

            }

        });

    }

}

2.10、键盘监听

package com.love.lesson03;

import java.awt.*;

import java.awt.event.KeyAdapter;

import java.awt.event.KeyEvent;

//键

public class TestKeyListener {

    public static void main(String[] args) {

        new KeyFrame();

    }

}

class KeyFrame extends Frame {

    public KeyFrame(){

        setBounds(1,2,300,400);

        setVisible(true);

        this.addKeyListener(new KeyAdapter() {

            //键盘按下

            @Override

            public void keyPressed(KeyEvent e) {

                int keyCode = e.getKeyCode();

                System.out.println(keyCode);

                if(keyCode == KeyEvent.VK_UP){

                    System.out.println("你按下了上键");

                }

            }

        });

    }

}

3、Swing

3.1、窗口、面板

package com.love.lesson04;

import javax.swing.*;

import java.awt.*;

public class JframeDemo02 {

    public static void main(String[] args) {

        new MyJframe2().init();

    }

}

class MyJframe2 extends JFrame {

    public void init(){

        this.setBounds(10,10,400,600);

        this.setVisible(true);

        JLabel label = new JLabel("欢迎");

        this.add(label);

        //让文本标签居中，设置水平对齐

        label.setHorizontalAlignment(SwingConstants.CENTER);

        //获得一个容器

        Container container = this.getContentPane();

        container.setBackground(Color.YELLOW);

    }

}

标签居中

package com.love.lesson04;

import javax.swing.*;

import java.awt.*;

public class JFrameDemo{

    public static void main(String[] args) {

        new JFrameDemo().init();

    }

    //init(); 初始化

    public void init(){

        JFrame jf = new JFrame("这是一个JFrame窗口");

        jf.setVisible(true);

        jf.setBounds(100,100,200,200);

        //jf.setBackground(Color.CYAN);

        JLabel label = new JLabel("这是一个JLabel");

        jf.add(label);

        label.setHorizontalAlignment(SwingConstants.CENTER);

        //关闭事件

        jf.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        Container container = jf.getContentPane();

        container.setBackground(Color.YELLOW);

    }

}

3.2、弹窗

package com.love.lesson04;

import javax.swing.*;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

//主窗口

public class DialogDemo extends JFrame {

    public static void main(String[] args) {

        new DialogDemo();

    }

    public DialogDemo(){

        this.setVisible(true);

        this.setSize(700,500);

        this.setLocation(100,200);

        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        //JFrame 放东西 容器

        Container container = this.getContentPane();

        //绝对布局

        container.setLayout(null);

        //按钮

        JButton button = new JButton("点击弹出一个对话框");

        button.setBounds(30,30,200,50);

        //点击按钮时弹出一个对话框

        button.addActionListener(new ActionListener() {

            //监听器

            @Override

            public void actionPerformed(ActionEvent e) {

                //弹窗

                new MyDialogDemo();

            }

        });

        container.add(button);

    }

}

//弹窗

class MyDialogDemo extends JDialog{

    public MyDialogDemo(){

        this.setVisible(true);

        this.setBounds(100,100,500,500);

        //弹窗自带关闭，不用自己设置

        //this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        Container container = this.getContentPane();

        container.setLayout(null);

        container.add(new Label("学Java"));

    }

}

3.3、标签

label

new JLabel("xxx");

图标ICON

package com.love.lesson04;

import javax.swing.*;

import java.awt.*;

public class IconDemo extends JFrame implements Icon {

    public static void main(String[] args) {

        new IconDemo().init();

    }

    private int width;

    private int height;

    public IconDemo(){

    }

    public IconDemo(int width, int height){

        this.width = width;

        this.height = height;

    }

    public void init(){

        IconDemo iconDemo = new IconDemo(30, 30);

        //图标放在标签上

        JLabel label = new JLabel("iconTest", iconDemo, SwingConstants.CENTER);

        Container container = getContentPane();

        container.add(label);

        this.setVisible(true);

        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

    @Override

    public void paintIcon(Component c, Graphics g, int x, int y) {

        g.fillOval(x,y,width,height);

    }

    @Override

    public int getIconWidth() {

        return width;

    }

    @Override

    public int getIconHeight() {

        return height;

    }

}

图片Icon

package com.love.lesson04;

import javax.swing.*;

import java.awt.*;

import java.net.URL;

public class ImageIconDemo extends JFrame {

    public static void main(String[] args) {

        new ImageIconDemo();

    }

    public ImageIconDemo(){

        JLabel label = new JLabel("ImageIcon");

        //获取图片地址  https://i.loli.net/2020/10/23/zcRDbvyjxgYa7km.png

        URL url = ImageIconDemo.class.getResource("123tp.jpg");

        //为啥不显示图片，我不清楚，应该是在Mac电脑的原因，下次回Windows系统试一试

        //ok了，我换成jpg格式的行了

        ImageIcon imageIcon = new ImageIcon(url);

        label.setIcon(imageIcon);

        label.setHorizontalAlignment(SwingConstants.CENTER);

        Container container = getContentPane();

        container.add(label);

        setVisible(true);

        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        setBounds(100,100,200,200);

    }

}

3.4、面板

JPanel

package com.love.lesson05;

import javax.swing.*;

import java.awt.*;

public class JPanelDemo extends JFrame {

    public static void main(String[] args) {

        new JPanelDemo();

    }

    public JPanelDemo(){

        //Container:容器

        Container container = this.getContentPane();

        //container.setLayout(new GridLayout(2,1));

        //后面参数意思是间距

        container.setLayout(new GridLayout(2,1,10,10));

        JPanel panel1 = new JPanel(new GridLayout(1, 3));

        JPanel panel2 = new JPanel(new GridLayout(1, 2));

        JPanel panel3 = new JPanel(new GridLayout(2, 1));

        JPanel panel4 = new JPanel(new GridLayout(3, 2));

        panel1.add(new Button("1"));

        panel1.add(new Button("1"));

        panel1.add(new Button("1"));

        panel2.add(new Button("2"));

        panel2.add(new Button("2"));

        panel3.add(new Button("3"));

        panel3.add(new Button("3"));

        panel4.add(new Button("4"));

        panel4.add(new Button("4"));

        panel4.add(new Button("4"));

        panel4.add(new Button("4"));

        panel4.add(new Button("4"));

        panel4.add(new Button("4"));

        container.add(panel1);

        container.add(panel2);

        container.add(panel3);

        container.add(panel4);

        this.setVisible(true);

        this.setSize(500,500);

        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

}

JScrollPanel

package com.love.lesson05;

import javax.swing.*;

import java.awt.*;

public class JScrollDemo extends JFrame {

    public static void main(String[] args) {

        new JScrollDemo();

    }

    public JScrollDemo(){

        //获取内容面板

        Container container = this.getContentPane();

        //文本域

        JTextArea textArea = new JTextArea(20,50);

        textArea.setText(" Who am i");

        //Scroll（滚动）面板

        JScrollPane scrollPane = new JScrollPane(textArea);

        container.add(scrollPane);

        this.setVisible(true);

        this.setBounds(100,100,300,350);

        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

}

3.5、按钮

图片按钮

package com.love.lesson05;

import com.love.lesson04.ImageIconDemo;

import javax.swing.*;

import java.awt.*;

import java.net.URL;

public class JButtonDemo01 extends JFrame {

    public static void main(String[] args) {

        new JButtonDemo01();

    }

    public JButtonDemo01(){

        Container container = this.getContentPane();

        //将一个图片变为图标

        URL url = JButtonDemo01.class.getResource("123tp.jpg");

        //icon:图标

        ImageIcon icon = new ImageIcon(url);

        //这个图标放在按钮上

        JButton button = new JButton();

        button.setIcon(icon);

        //Tool Tip Text 工具提示文本

        button.setToolTipText("图片按钮");

        container.add(button);

        this.setVisible(true);

        this.setSize(500,300);

        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

}

单选按钮

package com.love.lesson05;

import com.love.lesson04.ImageIconDemo;

import javax.swing.*;

import java.awt.*;

import java.net.URL;

public class JButtonDemo02 extends JFrame {

    public static void main(String[] args) {

        new JButtonDemo02();

    }

    public JButtonDemo02(){

        Container container = this.getContentPane();

        //将一个图片变为图标

        URL url = JButtonDemo01.class.getResource("123tp.jpg");

        //icon:图标

        ImageIcon icon = new ImageIcon(url);

        //单选框

        JRadioButton radioButton01 = new JRadioButton("JRadioButton01");

        JRadioButton radioButton02 = new JRadioButton("JRadioButton02");

        JRadioButton radioButton03 = new JRadioButton("JRadioButton03");

        //由于单选框只能选择一个，所以进行分组

        ButtonGroup group = new ButtonGroup();

        group.add(radioButton01);

        group.add(radioButton02);

        group.add(radioButton03);

        //加到容器中

        container.add(radioButton01,BorderLayout.NORTH);

        container.add(radioButton02,BorderLayout.CENTER);

        container.add(radioButton03,BorderLayout.SOUTH);

        this.setVisible(true);

        this.setSize(500,300);

        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

}

复选按钮

package com.love.lesson05;

import com.love.lesson04.ImageIconDemo;

import javax.swing.*;

import java.awt.*;

import java.net.URL;

public class JButtonDemo03 extends JFrame {

    public static void main(String[] args) {

        new JButtonDemo03();

    }

    public JButtonDemo03(){

        Container container = this.getContentPane();

        //将一个图片变为图标

        URL url = JButtonDemo01.class.getResource("123tp.jpg");

        //icon:图标

        ImageIcon icon = new ImageIcon(url);

        //复选框

        Checkbox checkbox01 = new Checkbox("checkbox01");

        Checkbox checkbox02 = new Checkbox("checkbox02");

        //复选框可以选多个，不用进行分组，

        //加到容器中

        container.add(checkbox01,BorderLayout.NORTH);

        container.add(checkbox02,BorderLayout.SOUTH);

        this.setVisible(true);

        this.setSize(500,300);

        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

}

3.6、列表

下拉框

package com.love.lesson06;

import javax.swing.*;

import java.awt.*;

/**

 * 下拉框

 */

public class TestComboboxDemo01 extends JFrame {

    public static void main(String[] args) {

        new TestComboboxDemo01();

    }

    public TestComboboxDemo01(){

        Container container = this.getContentPane();

        JComboBox status = new JComboBox();

        status.addItem(null);

        status.addItem("正在热映");

        status.addItem("已下架");

        status.addItem("即将上映");

        container.add(status);

        this.setVisible(true);

        this.setSize(500,350);

        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

}

列表框

package com.love.lesson06;

import javax.swing.*;

import java.awt.*;

import java.util.Vector;

/**

 * 列表框

 */

public class TestComboboxDemo02 extends JFrame {

    public static void main(String[] args) {

        new TestComboboxDemo02();

    }

    public TestComboboxDemo02(){

        Container container = this.getContentPane();

        //生成列表内容

        //String[] contents = {"1","2","3"};

        //动态添加

        Vector contents = new Vector();

        //列表中需要放入内容

        JList jList = new JList(contents);

        contents.add("zhangsan");

        contents.add("lisi");

        contents.add("wangwu");

        container.add(jList);

        this.setVisible(true);

        this.setSize(500,350);

        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

}

应用场景

- 选择地区，或者一些单个选项

- 列表，展示信息，一般是动态扩容!

3.7、文本框

文本框

package com.love.lesson06;

import javax.swing.*;

import java.awt.*;

/**

 *文本框

 */

public class TestTextDemo01 extends JFrame {

    public static void main(String[] args) {

        new TestTextDemo01();

    }

    public TestTextDemo01(){

        Container container = this.getContentPane();

        JTextField textField = new JTextField("hello");

        JTextField textField2 = new JTextField("world");

        container.add(textField,BorderLayout.SOUTH);

        container.add(textField2,BorderLayout.NORTH);

        this.setVisible(true);

        this.setSize(500,300);

        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

}

密码框

package com.love.lesson06;

import javax.swing.*;

import java.awt.*;

/**

 *密码框

 */

public class TestTextDemo02 extends JFrame {

    public static void main(String[] args) {

        new TestTextDemo02();

    }

    public TestTextDemo02(){

        Container container = this.getContentPane();

        JPasswordField passwordField = new JPasswordField();

        passwordField.setEchoChar('*');

        container.add(passwordField);

        this.setVisible(true);

        this.setSize(500,300);

        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

}

文本域

package com.love.lesson05;

import javax.swing.*;

import java.awt.*;

public class JScrollDemo extends JFrame {

    public static void main(String[] args) {

        new JScrollDemo();

    }

    public JScrollDemo(){

        //获取内容面板

        Container container = this.getContentPane();

        //文本域

        JTextArea textArea = new JTextArea(20,50);

        textArea.setText(" Who am i");

        //Scroll（滚动）面板

        JScrollPane scrollPane = new JScrollPane(textArea);

        container.add(scrollPane);

        this.setVisible(true);

        this.setBounds(100,100,300,350);

        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

}

巴特西

GUI编程笔记

GUI编程

1、简介

2、AWT

2.1、Awt介绍

2.2 组件和容器

1、Frame

2、面板Panel

2.3、布局管理器

流式布局

东西南北中

表格布局

作业：

总结:

2.4、事件监听

2.5、输入框TextField监听

2.6、简易计算器，组合+内部类回顾复习

2.7、画笔

2.8、鼠标监听

2.9、窗口监听

2.10、键盘监听

3、Swing

3.1、窗口、面板

3.2、弹窗

3.3、标签

label

图标ICON

图片Icon

3.4、面板

JPanel

JScrollPanel

3.5、按钮

图片按钮

单选按钮

复选按钮

3.6、列表

下拉框

列表框

应用场景

3.7、文本框

文本框

密码框

文本域

最新文章

热门文章