• java基础16 GUI编程（Swing和AWT）

    文章目录

    一、组件

    GUI编程（图形 用户 界面编程）
    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

    二、简介

    Gui的核心技术：Swing AWT
    因为界面不美观
    需要jre环境

    可以写出自己心目中的小工具

    三、AWT(抽象的窗口工具)

    包含了很多类和接口
    元素：
    窗口，按钮，文本框
    组件存放在容器中
    在这里插入图片描述

    四、Frame

    package chap2;

import java.awt.*;

public class Demo1 {
    public static void main(String[] args) {
        Frame frame = new Frame("java界面窗口");

//        需要设置可见性
        frame.setVisible(true);
//      设置窗口大小
        frame.setSize(200,500);
//        设置背景颜色
        frame.setBackground(new Color(25, 25, 203));
//        弹出的初始位置
        frame.setLocation(600,600);
//        设置大小固定
        frame.setResizable(false);
        
    }
}


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    五、Panel

    package chap2;

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

public class Demo2 {
//    Panel可以看做是一个空间，但是不能单独存在
    public static void main(String[] args) {
        Frame frame=new Frame("Myframe");
//        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(32, 194, 129));
//      设置相对于frame的坐标
        panel.setBounds(50,50,400,400);
        panel.setBackground(new Color(173, 171, 25));
        frame.add(panel);

        frame.setVisible(true);

//        监听事件
        frame.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }
}

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    六、事件监听

    package chap2;

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 Demo3 {
    public static void main(String[] args) {
        Frame frame=new Frame("开始-停止");
        Button button1=new Button("start");
        Button button2=new Button("stop");
        button2.setActionCommand("button2-stop");
        Mymonitor mymonitor=new Mymonitor();

        button1.addActionListener(mymonitor);
        button2.addActionListener(mymonitor);

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

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

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


    }
}

class Mymonitor implements ActionListener{

    @Override
    public void actionPerformed(ActionEvent e) {
        System.out.println("msg:"+e.getActionCommand());
    }
}


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    七、 文本框监听

    package chap2;

import sun.awt.WindowClosingListener;

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 Demo4 {
    public static void main(String[] args) {
        new MyFrame();
    }


}
class MyFrame extends Frame{
    public MyFrame(){
        TextField textField = new TextField();
        add(textField);

        textField.addActionListener(new MyActionListener());
//        设置编码
        textField.setEchoChar('*');
        addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
        pack();
        setVisible(true);
    }
}
class MyActionListener implements ActionListener{
    @Override
    public void actionPerformed(ActionEvent e) {
        TextField textField= (TextField) e.getSource();
        String text = textField.getText();
        System.out.println(text);
    }
}

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    八、Paint

    package chap2;

import java.awt.*;

public class Demo5 {
    public static void main(String[] args) {
        new MyPaint().loadPaint();
    }
}
class MyPaint extends Frame{
    public void loadPaint(){
        setBounds(200,200,600,500);
        setVisible(true);
    }

    @Override
    public void paint(Graphics g) {
            g.setColor(Color.red);
            g.drawOval(100,100,100,100);
            g.fillOval(50,50,50,50);
    }
}


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    九、鼠标监听

    package chap2;

import java.awt.*;
import java.awt.event.*;
import java.util.ArrayList;
import java.util.Iterator;

public class Demo6 {
    public static void main(String[] args) {
        new MyFrame1("画图");
    }
}
class MyFrame1 extends Frame{
    ArrayList ponits;

    public MyFrame1(String title){
        super(title);
        setBounds(200,200,400,300);

        ponits=new ArrayList();

        this.addMouseListener(new MyMouseListener());
        this.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
        setVisible(true);

    }

    @Override
    public void paint(Graphics g) {
        Iterator iterator=ponits.iterator();
        while (iterator.hasNext()){
            Point point = (Point) iterator.next();
            g.setColor(Color.BLUE);
            g.fillOval(point.x,point.y,10,10);
        }
    }
    public void addPoint(Point point){
        ponits.add(point);
    }


    private class MyMouseListener extends MouseAdapter {
        @Override
        public void mousePressed(MouseEvent e) {
            MyFrame1 myFrame1 = (MyFrame1) e.getSource();

            addPoint(new Point(e.getX(),e.getY()));
            myFrame1.repaint();
        }
    }


}


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    十、窗口监听

    package chap2;

import sun.awt.WindowClosingListener;

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

public class Demo7 {
    public static void main(String[] args) {
        new Myframetwo();
    }
}
class Myframetwo extends Frame{
    public Myframetwo(){
        setBackground(Color.GRAY);
        setBounds(200,200,400,300);
        setVisible(true);
        this.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                setVisible(false);
            }

            @Override
            public void windowActivated(WindowEvent e) {
                setBackground(Color.yellow);
            }
        });
    }
}

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    十一、键盘监听

    package chap2;

import javafx.animation.KeyFrame;

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

public class Demo8 {
    public static void main(String[] args) {
        new KeyFrame1();
    }
}

class KeyFrame1 extends Frame{
    public KeyFrame1(){
        setBackground(Color.GRAY);
        setBounds(200,200,400,300);
        setVisible(true);
        this.addKeyListener(new KeyListener() {
            @Override
            public void keyTyped(KeyEvent e) {

            }

            @Override
            public void keyPressed(KeyEvent e) {
                int keycode=e.getKeyCode();
                if (keycode==KeyEvent.VK_UP){
                    setBackground(Color.BLUE);
                }else {
                    setVisible(false);
                }
            }

            @Override
            public void keyReleased(KeyEvent e) {

            }
        });
    }
}

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    十二、Jframe

    package chap2;

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

public class Demo9 {

    public static void main(String[] args) {
        new Demo9().init();
    }
    public void init(){
        JFrame frame=new JFrame();
        frame.setBounds(300,300,400,500);
        frame.setVisible(true);
//        设置文字Jlabel
        JLabel label=new JLabel("hello");

        label.setHorizontalAlignment(SwingConstants.CENTER);
        frame.add(label);

        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

}


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    十三、JDialog弹窗

    package chap2;

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

public class Demo10 {
    public static void main(String[] args) {
        new DiaTest();
    }

}
class DiaTest extends JFrame {
    public DiaTest(){
        setVisible(true);
        setSize(400,500);

//        Jframe容器 存放东西
        Container container=this.getContentPane();
//      绝对布局
        container.setLayout(null);

        JButton button=new JButton("点击弹出一个对话框");
        button.setBounds(100,100,200,50);
        button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                new MyDialog();
            }
        });
        container.add(button);

    }
}
class MyDialog extends JDialog{

    public MyDialog() {
        this.setVisible(true);
        this.setBounds(100,100,200,200);

        Container container = this.getContentPane();
        container.setLayout(null);

        container.add(new JLabel("学习java"));

    }
}


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    十四、Icon

    package chap2;

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

// 图标是个弹窗 需要实现类 jFrame继承
public class Demo11 extends JFrame implements Icon {
    private int width;
    private int height;
    public static void main(String[] args) {
        new Demo11().init();

    }

    public Demo11(int width, int height){
        this.width = width;
        this.height = height;
    }

    public Demo11(){
    }

    public void init(){
        Demo11 icon=new Demo11(15,15);
        JLabel icontest = new JLabel("icontest", icon, SwingConstants.CENTER);

        Container container=getContentPane();
        container.add(icontest);

//        this.setBounds(100,100,300,400);
        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;
    }


}


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    package chap2;

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

public class Demo12 extends JFrame{


    public Demo12(){
        JLabel label=new JLabel("ImageIcon");
        URL url=Demo12.class.getResource("tx.jpg");
        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 Demo12();
    }
}


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    十五、面板

    package chap2;

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

public class JpanelDemo extends JFrame {

    public JpanelDemo(){
        Container container=this.getContentPane();

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

        JPanel jPanel1 = new JPanel(new GridLayout(1,3));
        JPanel jPanel2 = new JPanel(new GridLayout(1,2));
        JPanel jPanel3 = new JPanel(new GridLayout(2,1));
        JPanel jPanel4 = new JPanel(new GridLayout(3,2));

        jPanel1.add(new JButton("1"));
        jPanel1.add(new JButton("1"));
        jPanel1.add(new JButton("1"));
        jPanel2.add(new JButton("1"));
        jPanel2.add(new JButton("1"));
        jPanel2.add(new JButton("1"));
        jPanel3.add(new JButton("1"));
        jPanel3.add(new JButton("1"));
        jPanel3.add(new JButton("1"));
        jPanel4.add(new JButton("1"));
        jPanel4.add(new JButton("1"));
        jPanel4.add(new JButton("1"));

        this.setVisible(true);

        container.add(jPanel1);
        container.add(jPanel2);
        container.add(jPanel3);
        container.add(jPanel4);

        this.setVisible(true);
        this.setSize(400,500);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

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


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    十六、单选框

    package chap2;

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();
        URL url=JbuttonDemo02.class.getResource("tx.jpg");
        Icon icon=new ImageIcon(url);

        JRadioButton radioButton1=new JRadioButton("JRadioButton01");
        JRadioButton radioButton2=new JRadioButton("JRadioButton02");
        JRadioButton radioButton3=new JRadioButton("JRadioButton03");

        ButtonGroup buttonGroup=new ButtonGroup();
        buttonGroup.add(radioButton1);
        buttonGroup.add(radioButton2);
        buttonGroup.add(radioButton3);

        container.add(radioButton1,BorderLayout.CENTER);
        container.add(radioButton2,BorderLayout.NORTH);
        container.add(radioButton3,BorderLayout.SOUTH);

        this.setVisible(true);
        this.setSize(500,300);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);


    }
}


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    十七、复选框

    package chap2;

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();
        URL url=JbuttonDemo02.class.getResource("tx.jpg");
        Icon icon=new ImageIcon(url);

        JCheckBox checkBox1=new JCheckBox("checkbox1");
        JCheckBox checkBox2=new JCheckBox("checkbox2");

        container.add(checkBox1,BorderLayout.NORTH);
        container.add(checkBox2,BorderLayout.SOUTH);

        this.setVisible(true);
        this.setSize(500,300);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);


    }
}


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    十八、下拉框

    package chap2;

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

public class TestComboboxDemo extends JFrame {
    public static void main(String[] args) {
        new TestComboboxDemo();
    }
    public TestComboboxDemo(){
        Container container=this.getContentPane();
        JComboBox jComboBox=new JComboBox();
        jComboBox.addItem(null);
        jComboBox.addItem("1");
        jComboBox.addItem("2");
        jComboBox.addItem("3");

        container.add(jComboBox);

        this.setVisible(true);
        this.setSize(500,350);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);


    }
}


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    十九、滚动文本框

    package chap2;

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

public class JscrollDemo extends JFrame {
    public static void main(String[] args) {
        new JscrollDemo();
    }
    public JscrollDemo(){
        Container container=this.getContentPane();
        JTextArea jTextArea=new JTextArea(20,50);
        jTextArea.setText("Hello");

        JScrollPane jScrollPane=new JScrollPane(jTextArea);
        container.add(jScrollPane);

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


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    二十、密码文本框

    ackage chap2;

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

public class JPasswordFieldDemo extends JFrame {
    public static void main(String[] args) {
        new JPasswordFieldDemo();
    }

    public JPasswordFieldDemo(){
        Container container=this.getContentPane();

        JPasswordField jPasswordField=new JPasswordField();
        jPasswordField.setEchoChar('*');

        container.add(jPasswordField);

        this.setVisible(true);
        this.setSize(500,200);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
}

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  • 原文地址：https://blog.csdn.net/Wantfly9951/article/details/127603547