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Java-GUI练习

程序员文章站 2022-06-28 16:43:47
AWT1.Frame封装实现多个Frameddpackage com.qiang.lesson01;import java.awt.*;public class TestFrame2 { public static void main(String[] args) { //展示多个Frame MyFrame myFrame1 = new MyFrame(100, 100, 200, 200, Color.black); MyFrame...

AWT

1.Frame

封装实现多个Framedd

Java-GUI练习
package com.qiang.lesson01;

import java.awt.*;

public class TestFrame2 {
    public static void main(String[] args) {
        //展示多个Frame
        MyFrame myFrame1 = new MyFrame(100, 100, 200, 200, Color.black);
        MyFrame myFrame2 = new MyFrame(300, 100, 200, 200, Color.red);
        MyFrame myFrame3 = new MyFrame(100, 300, 200, 200, Color.gray);
        MyFrame myFrame4 = new MyFrame(300, 300, 200, 200, Color.green);

    }
} 

class MyFrame extends Frame{
    static int id = 0;//窗口计数
    public MyFrame(int x,int y,int w,int h,Color color){
        super("MyFrame"+(++id));
        setBounds(x,y,w,h);
        setBackground(color);
        setVisible(true);
    }

}

2. Panel

解决关闭事件 Java-GUI练习

package com.qiang.lesson01;

import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;

/**
 * @author ma
 */
public class TestPanel {
    public static void main(String[] args) {
        Frame frame = new Frame();

        //布局
        Panel panel = new Panel();
        //设置布局
        frame.setLayout(null);

        frame.setBounds(300,300,500,500);
        frame.setBackground(new Color(35, 205, 78, 255));
        //面板
        panel.setBounds(50,50,400,400);
        panel.setBackground(new Color(0xE01141));

        //frame.add
        frame.add(panel);

        frame.setVisible(true);

        //监听事件 System.exit()
        //适配器模式
        frame.addWindowListener(new WindowAdapter() {
            //窗口点击关闭
            @Override
            public void windowClosing(WindowEvent e) {
                super.windowClosing(e);
                System.exit(0);
            }
        });

    }
}

3. 布局管理器

  1. 流式布局

    package com.qiang.lesson01;

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();

        //组件
        Button button1 = new B utton("button1");
        Button button2 = new Button("button2");
        Button button3 = new Button("button3");
        //设置为流式布局
        frame.setLayout(new FlowLayout(FlowLayout.LEFT));

        frame.add(button1);
        frame.add(button2);
        frame.add(button3);
        frame.setSize(400,400);
        frame.setVisible(true);
        frame.addWindowListener(new WindowAdapter() {
            //窗口点击关闭
            @Override
            public void windowClosing(WindowEvent e) {
                super.windowClosing(e);
                System.exit(0);
            }
        });


    }
}

  2. 东西南北中

    package com.qiang.lesson01;

import java.awt.*;

public class TestBoderLayout {
    public static void main(String[] args) {
        Frame frame = new Frame("TestBorderLayout");

        Button east = new Button("East");
        Button west = new Button("West");
        Button north = new Button("North");
        Button south = new Button("South");

        frame.add(east,BorderLayout.EAST);
        frame.add(west,BorderLayout.WEST);
        frame.add(south,BorderLayout.SOUTH);
        frame.add(north,BorderLayout.NORTH);
        
        frame.setSize(200,200);
        frame.setVisible(true);
    }
}

  3. 表格布局

    package com.qiang.lesson01;
import java.awt.*;

public class TestGridLayout {
    public static void main(String[] args) {
        Frame frame = new Frame("TestGridLayout");

        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");

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

        frame.add(btn1);
        frame.add(btn2);
        frame.add(btn3);
        frame.add(btn4);
        frame.add(btn5);
        frame.add(btn6);

        frame.pack();//Java函数
        frame.setVisible(true);
    }
}

  4. Java-GUI练习Java-GUI练习

    frame =

    panel1 （ （ border）button1（east）+panel2(table(2,1)) + button2(west)) ）

    panel3 （ （ border）button3（east）+pane3l(table(2,2)) + button4(west)) ）

    public class ExDemo {
    public static void main(String[] args) {
        Frame frame = new Frame();
        frame.setSize(400,300);
        frame.setLocation(500,500);
        frame.setVisible(true);
        frame.setLayout(new GridLayout(2,1));

        //4 panel
        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));

        p1.add(new Button("b1"),BorderLayout.WEST);
        p1.add(new Button("b2"),BorderLayout.EAST);

        p2.add(new Button("b5"));
        p2.add(new Button("b6"));

        p1.add(p2,BorderLayout.CENTER);

        p3.add(new Button("b3"),BorderLayout.WEST);
        p3.add(new Button("b4"),BorderLayout.EAST);

        p4.add(new Button("b7"));
        p4.add(new Button("b8"));
        p4.add(new Button("b9"));
        p4.add(new Button("b0"));

        p3.add(p4,BorderLayout.CENTER);

        frame.add(p1);
        frame.add(p3);
    }
}

4. 事件监听

  1. 按钮事件监听

package com.qiang.lesson02;

import java.awt.*;
import java.awt.event.*;

public class lesson02 {
    public static void main(String[] args) {
        //按下按钮出发事件

        Frame frame = new Frame();
        Button button = new Button("message");

        //因为 addActionListener()需要一个ActionListener，所以我们构造一个需要一个ActionListener
        MyActionListener myActionListener = new MyActionListener();
        button.addActionListener(myActionListener);

        frame.add(button,BorderLayout.CENTER);
        frame.pack();
        windowClose(frame);
        frame.setVisible(true);

    }
    private static void windowClose(Frame frame){
        frame.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }
}

//事件监听
class MyActionListener implements  ActionListener{
    @Override
    public void actionPerformed(ActionEvent e) {
        System.out.println("aaaaaaaaaaa");

    }
}

  1. 多个按钮共享一个事件

    package com.qiang.lesson02;

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

public class TestActionTwo {
    public static void main(String[] args) {
        //两个按钮实现同一个监听
        //开始 停止
        Frame frame = new Frame("开始  停止");
        Button button1 = new Button("start");
        Button button2 = new Button("stop");

        //可以显式定义返回值
        //可以多个按钮只写一个监听类！
        button2.setActionCommand("button-->stop");

        MyMonitor myMonitor = new MyMonitor();
        button1.addActionListener(myMonitor);
        button2.addActionListener(myMonitor);

        frame.add(button1,BorderLayout.NORTH);
        frame.add(button2,BorderLayout.SOUTH);

        frame.pack();
        frame.setVisible(true);

    }
}
class MyMonitor implements  ActionListener{

    @Override
    public void actionPerformed(ActionEvent e) {
        //e.getActionCommand()获得按钮的信息
        System.out.println("按钮被点击：msg:    "+ e.getActionCommand());
        if(e.getActionCommand().equals("star")){

        }
    }
}

5.输入框TextField监听

package com.qiang.lesson02;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class TextTex01 {
    public static void main(String[] args) {
        //启动！
        new MyFrame();
    }
}
class MyFrame extends Frame{
    public MyFrame()  {
        TextField textField = new TextField();
        add(textField);

        //监听文本框输入的文字
        MyTextFieldListener myTextFieldListener = new MyTextFieldListener();
        //按下enter触发
        textField.addActionListener(myTextFieldListener);

        //设置替换编码
        textField.setEchoChar('@');

        pack();
        setVisible(true);
    }
}
class MyTextFieldListener implements ActionListener{
    @Override
    public void actionPerformed(ActionEvent e) {

        TextField filed =  (TextField) e.getSource();//获得一些资源,返回对象
        System.out.println(filed.getText());//获得输入框文本
        filed.setText("");
    }
}

6. 简易计算器，组合+内部类优化

  1. package com.qiang.lesson02;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

//简易计算器
public class TestCalc {
    public static void main(String[] args) {
        new Calculator();

    }
}
//计算器类
class Calculator extends Frame{
    public Calculator() {
        //3 Tex
        TextField num1 = new TextField(10);
        TextField num2 = new TextField(10);
        TextField num3 = new TextField(20);
        //1 label
        Label label = new Label("+");
        //1 button
        Button button = new Button("=");
        button.addActionListener(new MyCalculatorListener(num1,num2,num3));
        //布局
        setLayout(new FlowLayout());
        add(num1);
        add(label);
        add(num2);
        add(button);
        add(num3);
        pack();
        setVisible(true);
    }
}
//监听器类
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
        int n1 = Integer.parseInt(num1.getText());
        int n2 = Integer.parseInt(num2.getText());
        //2.运算后放到第三个框
        num3.setText(""+(n1+n2));
        //3.清除前两个
        num1.setText("");
        num2.setText("");
    }
}

  2. 完全改造为面向对象写法：组合

    package com.qiang.lesson02;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

//简易计算器
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;
    Label label;
    Button button;

    //方法
    public void loadFrame(){
        //3 Tex 1 label 1 button
        num1 = new TextField(10);
        num2 = new TextField(10);
        num3 = new TextField(20);
        label = new Label("+");
        button = new Button("=");

        button.addActionListener(new MyCalculatorListener(this));

        //布局
        setLayout(new FlowLayout());
        add(num1);
        add(label);
        add(num2);
        add(button);
        add(num3);
        pack();
        setVisible(true);
    }
}

//监听器类
class MyCalculatorListener implements ActionListener{

    //获取这个对象,在一个类中组合另外一个类
    Calculator calculator = null;
    public MyCalculatorListener(Calculator calculator) {
        this.calculator = calculator;
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        //1.获得2.运算后放到第三个框3.清除前两个

        int n1 = Integer.parseInt(calculator.num1.getText());
        int n2 = Integer.parseInt(calculator.num2.getText());
        calculator.num3.setText(""+(n1+n2));
        calculator.num1.setText("");
        calculator.num2.setText("");
    }
}

  3. 完全改造为面向对象写法：内部类 更好的包装

    package com.qiang.lesson02;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

//简易计算器
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;
    Label label;
    Button button;

    //方法
    public void loadFrame(){
        //3 Tex 1 label 1 button
        num1 = new TextField(10);
        num2 = new TextField(10);
        num3 = new TextField(20);
        label = new Label("+");
        button = new Button("=");

        button.addActionListener(new MyCalculatorListener());

        //布局
        setLayout(new FlowLayout());
        add(num1);
        add(label);
        add(num2);
        add(button);
        add(num3);
        pack();
        setVisible(true);
    }
    //内部类监听器类
    //畅通无阻的访问外部类的属性和方法！
    private class MyCalculatorListener implements ActionListener{
        @Override
        public void actionPerformed(ActionEvent e) {

            int n1 = Integer.parseInt(num1.getText());
            int n2 = Integer.parseInt(num2.getText());
            num3.setText(""+(n1+n2));
            num1.setText("");
            num2.setText("");
        }
    }
}

7. 画笔

package com.qiang.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);
    }
    //画笔
    @Override
    public void paint(Graphics g) {
        //颜色，画画
        g.setColor(Color.red);
        g.fillOval(100,100,100,100);

        g.setColor(Color.green);
        g.fillRect(100,200,200,200);

        //画笔用完还原
    }
}

8.鼠标监听

实现鼠标点击画画

[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-8LmFWi5M-1605884713020)(C:\Users\马永强\AppData\Roaming\Typora\typora-user-images\image-20201120193705794.png)]

package com.qiang.lesson03;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.util.ArrayList;
import java.util.Iterator;

public class TestMouseListener {
    public static void main(String[] args) {
        new MyFrame("画画");

    }
}

class  MyFrame extends Frame{
    //画笔，监听鼠标位置，集合存储鼠标位置点
    ArrayList points;

    public MyFrame(String title) {
        super(title);
        setBounds(200,200,400,300);
        //存点
        points = new ArrayList<>();

        //鼠标监听器，针对此窗口
        this.addMouseListener(new MyMouseListener());


        setVisible(true);
    }

    @Override
    public void paint(Graphics g) {
        //画画，监听鼠标事件
        Iterator iterator = points.iterator();
        while (iterator.hasNext()){
            Point point = (Point) iterator.next();
            g.setColor(Color.blue);
            g.fillOval(point.x,point.y,10,10);
        }

    }
    //添加一个点到界面上
    public void addPaint(Point point){
        points.add(point);

    }

    private class MyMouseListener extends MouseAdapter{
        //鼠标 按下 弹起 按住
        @Override
        public void mousePressed(MouseEvent e) {
            MyFrame myFrame = (MyFrame) e.getSource();
            //点击的时候在界面产生一个点！画
            //鼠标的点
            myFrame.addPaint(new Point(e.getX(),e.getY()));

            //每次点击重新画一遍
            myFrame.repaint();  //刷新  帧
        }
    }
}

9.窗口监听

package com.qiang.lesson03;

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

public class TestWindow {
    public static void main(String[] args) {
        new WindowFrame();

    }
}
class WindowFrame extends Frame{
    public WindowFrame(){

        setBackground(Color.black);
        setBounds(100,100,200,200);
        setVisible(true);


        addWindowListener(
                //匿名内部类
                new WindowAdapter() {
                    @Override
                    public void windowClosing(WindowEvent e) {
                        System.out.println("windowClosing");
                        System.exit(0);
                    }

                    @Override
                    public void windowActivated(WindowEvent e) {
                        System.out.println("windowActivated");
                        WindowFrame windowFrame = (WindowFrame)e.getSource();
                        windowFrame.setTitle(" ttttttttttt");
                    }

                    @Override
                    public void windowDeactivated(WindowEvent e) {
                        WindowFrame windowFrame = (WindowFrame)e.getSource();
                        windowFrame.setTitle(" NNNN");
                    }
                }
        );
    }

}

10.键盘监听

package com.qiang.lesson03;
import java.awt.*;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

public class TestKeyListener {
    public static void main(String[] args) {
        new KeyFrame();
    }
}
class KeyFrame extends Frame{
    public KeyFrame() {
        setBounds(1,2,300,400);
        setVisible(true);

        addKeyListener(new KeyAdapter() {
            //键盘按下
            @Override
            public void keyPressed(KeyEvent e) {
                //获得键盘按下的code
                int keyCode = e.getKeyCode();
                System.out.println(keyCode);
                if(keyCode ==KeyEvent.VK_UP){
                    System.out.println("wwwwwwwwwwwwww");
                }
                //拓展 根据按下不同操作，产生不同结果
            }
        });

    }
}

Swing

1.窗口

package com.qiang.lesson04;

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

public class JFrameDemo {

    //init()初始化
    public void init(){
        //*窗口
        JFrame jf = new JFrame("JFrame窗口");
        jf.setVisible(true);
        jf.setBounds(100,100,200,200);
        //jf.setBackground(Color.red);无效
        //设置文字
        JLabel jlabel = new JLabel("----------------------------------");
        jf.add(jlabel);
        jf.getContentPane().setBackground(Color.red);
        //关闭事件
        jf.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
    public static void main(String[] args) {
        //建立一个窗口
        new JFrameDemo().init();
    }
}

package com.qiang.lesson04;

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

public class JframeDemo02 {
    public static void main(String[] args) {
        new MyJrame2().init();
    }
}
class MyJrame2 extends JFrame{
    public void init(){
        this.setBounds(100,100,200,500);
        this.setVisible(true);
        //获得一个容器
        Container container = this.getContentPane();
        container.setBackground(Color.red);
        JLabel jlabel = new JLabel("----------------------------------");
		//标签居中
        jlabel.setHorizontalAlignment(SwingConstants.CENTER);
        this.add(jlabel);


    }
}

2.弹窗

默认就有关闭事件

package com.qiang.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 DialogDemo()  {
        this.setVisible(true);
        this.setSize(700,500);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        //JFrame 容器
        Container container = this.getContentPane();
        //绝对布局
        container.setLayout(null);
        //按钮
        JButton button = new JButton("点击弹出对话框");
        button.setBounds(30,30,200,50);

        //点击弹出弹窗
        button.addActionListener(new ActionListener() {//监听器
            @Override
            public void actionPerformed(ActionEvent e) {
                new MyDialogDemo();
            }
        });

        container.add(button);
    }
    public static void main(String[] args) {
        new DialogDemo();
    }
}

弹窗
class MyDialogDemo extends JDialog{
    public MyDialogDemo() {
        this.setVisible(true);
        this.setBounds(100,100,500,500);
        Container container = this.getContentPane();
        //container.setLayout(null);
        container.add(new JLabel("ssssssss"));
    }
}

3.标签

label

new JLabel("xxxx")

图标ICON

package com.qiang.lesson04;

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

//图标，需要实现类，Frame继承
public class IconDemo extends JFrame implements Icon {

    private int width;
    private  int height;

    public  IconDemo(){}

    public  IconDemo(int width,int height){
        this.width = width;
        this.height = height;
    }

    public static void main(String[] args) {
        new IconDemo().init();
    }
    public void init(){
        IconDemo iconDemo = new IconDemo(15, 15);
        //图标放在标签上，也可以放在按钮上！
        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 this.width;
    }

    @Override
    public int getIconHeight() {
        return this.height;
    }
}

图片

package com.qiang.lesson04;


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

public class ImageIconDemo extends JFrame {

    public ImageIconDemo(){
        //获得图片路径
        JLabel label = new JLabel("ImageIcon");
        URL url = ImageIconDemo.class.getResource("tx.png");
        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);


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

}

4.面板

5.按钮

  1. 单选按钮
  2. 复选按钮

6.列表

7.文本框

本文地址：https://blog.csdn.net/weixin_41750881/article/details/109880255

相关标签： JAVA swing

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