Java-GUI练习

程序员文章站 2022-03-26 16:36:48

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

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

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);
            }
        });


    }
}

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);
    }
}

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);
    }
}

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");

    }
}

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

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("");
    }
}

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("");
    }
}

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

单选按钮
复选按钮

6.列表

7.文本框

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

Java-GUI练习

AWT

1.Frame

2. Panel

3. 布局管理器

4. 事件监听

5.输入框TextField监听

6. 简易计算器，组合+内部类优化

7. 画笔

8.鼠标监听

9.窗口监听

10.键盘监听

Swing

1.窗口

2.弹窗

3.标签

4.面板

5.按钮

6.列表

7.文本框

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SQL语句练习实例之四找出促销活动中销售额最高的职员

java循环练习的简单代码实例

Java-GUI练习

AWT

1.Frame

2. Panel

3. 布局管理器

4. 事件监听

5.输入框TextField监听

6. 简易计算器，组合+内部类优化

7. 画笔

8.鼠标监听

9.窗口监听

10.键盘监听

Swing

1.窗口

2.弹窗

3.标签

4.面板

5.按钮

6.列表

7.文本框

sql 语句练习与答案

JAVA反射练习

SQL语句练习实例之六 人事系统中的缺勤（休假）统计

SQL语句练习实例之二——找出销售冠军

SQL语句练习实例之七 剔除不需要的记录行

SQL语句练习实例之一——找出最近的两次晋升日期与工资额

SQL语句练习实例之三——平均销售等待时间

SQL语句练习实例之五 WMS系统中的关于LIFO或FIFO的问题分析

SQL语句练习实例之四 找出促销活动中销售额最高的职员

java循环练习的简单代码实例

SQL语句练习实例之六人事系统中的缺勤（休假）统计

SQL语句练习实例之七剔除不需要的记录行

SQL语句练习实例之四找出促销活动中销售额最高的职员