标签：GUI 编程 Button add frame import new public

GUI编程1

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

1.因为界面不美观。

2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

1.包含了很多类和接口!GUI !

2.元素:窗口，按钮，文本框

3 java.awt

2.2、组件和容器

1、Frame

//GUI的第一个界而
public class TestFrame {
    public static void main(String[] args) {
        //Frame.JDK,看源码!
        Frame frame = new Frame("我的第一个java图像界面窗口");
        //需要设置可见性
        frame.setVisible(true);
        //设置窗口大小
        frame.setSize(400,400);
        //设置颜色背景
        frame.setBackground(new Color(71, 234, 106));
        //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 demo01;

import java.awt.*;

public class TestFrame2  {
    public static void main(String[] args) {
        //展示多个窗口new
        MyFrame myFrame1 = new MyFrame(100, 100, 200, 200, Color.blue);
        MyFrame myFrame2 = new MyFrame(100, 300, 200, 200, Color.black);
        MyFrame myFrame3 = new MyFrame(300, 100, 200, 200, Color.darkGray);
        MyFrame myFrame4 = new MyFrame(300, 300, 200, 200, Color.cyan);
    }

}
class MyFrame extends Frame{
    static int id=0;//可能存在多个窗口，我们需要一个计数器

    public MyFrame(int x,int y,int w,int h,Color color){
        super("MyFrame+"+(++id));
        setVisible(true);
        setBounds(x,y,w,h);
        setBackground(color);
        //setResizable(false);

    }
}

2、面板Panel

解决了关闭事件!

package demo01;
// PaneL可以看成是一个空间，但是不能单独存在

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

public class TestPanel1 {
    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);

        frame.setBounds(300,300,500,500);
        frame.setBackground(Color.cyan);

        //panel设置坐标，相对于frame
        panel.setBounds(100,100,400,400);
        panel.setBackground(new Color(231, 25, 25));

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

        frame.setVisible(true);

        //监听事件，监听窗口关闭事件system.exit(e)
        // 适配器模式:
        frame.addWindowListener(new WindowAdapter() {
            //窗口点击关闭的时候需要做的事情
            @Override
            public void windowClosing(WindowEvent e) {

                //结束程序
                System.exit(0);
            }
        });
    }
}

3、布局管理器

流式布局

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

        //组件-按钮
        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.setBounds(500,500,500,500);
        frame.setVisible(true);
        //把按钮添加上去
        frame.add(button1);
        frame.add(button2);
        frame.add(button3);

    }

东西南北中

package demo01;

import java.awt.*;

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.setVisible(true);
        frame.setBounds(500,500,500,500);
    }
}

表格布局

package demo01;

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();//自动优化布局
        frame.setVisible(true);
        frame.setBounds(500,500,500,500);
    }
}

package demo01;

import java.awt.*;

public class EXDay91600 {
    public static void main(String[] args) {
        Frame frame = new Frame();
        frame.setSize(500,500);
        frame.setLocation(400,400);
        frame.setBackground(Color.CYAN);
        frame.setVisible(true);
        //上下一分为二
        frame.setLayout(new GridLayout(2,1));
        
        //4个面板
        Panel panel1 = new Panel(new BorderLayout());//边界，包边
        Panel panel2 = new Panel(new GridLayout(2,1));
        Panel panel3 = new Panel(new BorderLayout());
        Panel panel4 = new Panel(new GridLayout(2,2));

        //上方ok
        panel1.add(new Button("east-1"),BorderLayout.EAST);
        panel1.add(new Button("west-1"),BorderLayout.WEST);
        panel2.add(new Button("p2-btn-1"));
        panel2.add(new Button("p2-btn-2"));
        panel1.add(panel2,BorderLayout.CENTER);

        //下方ok
        panel3.add(new Button("east-1"),BorderLayout.EAST);
        panel3.add(new Button("west-1"),BorderLayout.WEST);
        panel4.add(new Button("p2-btn-1"));
        panel4.add(new Button("p2-btn-2"));
        panel4.add(new Button("p2-btn-3"));
        panel4.add(new Button("p2-btn-4"));
        panel3.add(panel4,BorderLayout.CENTER);

        //把面板放入框架
        frame.add(panel1);
        frame.add(panel3);
    }
}

总结:

1.Frame是一个顶级窗口

2.Panel无法单独显示，必须添加到某个容器中。

3.布局管理器

流式
东西南北中
表格

4.大小，定位，背景颜色，可见性，监听!

4、事件监听

事件监听:当某个事情发生的时候，干什么?

package demo02;

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();
        //按下按钮，触发一些事件
        //因为，addActionListener()需要一个ActionListener，所以我们需要构造一个 ActionListener
        Button button = new Button("btn");
        MyActionListenter myActionListenter = new MyActionListenter();
        button.addActionListener(myActionListenter);

        frame.add(button,BorderLayout.CENTER);
        frame.pack();
        frame.setVisible(true);
        frame.setBounds(500,500,500,500);
        windowClose(frame);
    }

    //关闭窗体的事件
    private static void windowClose(Frame frame){
        frame.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }

}
//事件监听
class MyActionListenter implements ActionListener{

    @Override
    public void actionPerformed(ActionEvent e) {
        System.out.println("aaaaaa");
    }
}

多个按钮，共享一个事件

package demo02;

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

public class TestActionEvent2 {
    public static void main(String[] args) {

        Frame frame = new Frame();
        frame.pack();
        frame.setVisible(true);
        frame.setBounds(500,500,500,500);
        //两个按钮，实现同一个监听
        // 开始  停止
        Button start = new Button("start");
        Button stop = new Button("stop");

        //可以显示的定义触发会返回的命令,如果不显示定义，则会走默认的值!
        //可以多个按钮只写一个监听类

        stop.setActionCommand("000");
        MyMonitor myMonitor = new MyMonitor();

        start.addActionListener(myMonitor);
        stop.addActionListener(myMonitor);

        frame.add(start,BorderLayout.NORTH);
        frame.add(stop,BorderLayout.SOUTH);
    }
}

class MyMonitor implements ActionListener{

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

2.5、输入框TextField 监听

package demo03;

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

public class MyActionListener implements ActionListener {
    @Override
    public void actionPerformed(ActionEvent e) {
       TextField textField= (TextField) e.getSource();//获得一些资源,返回的一个对象
        System.out.println(textField.getText());//获得输入框的文本
        textField.setText("");

    }
}
======
package demo03;

import java.awt.*;

public class MyFrame extends Frame {

    public MyFrame() {


        TextField textField = new TextField();
        add(textField);

        ///监听这个文本框输入的文字
        MyActionListener myActionListener = new MyActionListener();
        //按下enter就会触发这个输入框的事件
        textField.addActionListener(myActionListener);

        //设置替换编码
        textField.setEchoChar('*');
    }
    {
        setBounds(300,300,500,500);
        setBackground(new Color(100, 209, 179));
        setVisible(true);
        //pack();
        }
}
=======
package demo03;

public class Day91700 {
    public static void main(String[] args) {
        MyFrame myFrame = new MyFrame();

    }
}

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 demo03;

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

public class TestCalc {
    public static void main(String[] args) {
        Calculator calculator = new Calculator();
    }
}

//计算器类
class Calculator extends Frame{
    public Calculator(){
        //3个文本框
        TextField num1 = new TextField(10);//字符数
        TextField num2 = new TextField(10);
        TextField num3 = new TextField(20);

        //1个按钮
        Button button = new Button("=");
        button.addActionListener(new MyCalcListener(num1,num2,num3));

        //1个标签
        Label label = new Label("+");

        //布局
        setLayout( new FlowLayout());
       add(num1);
       add(label);
       add(num2);
       add(button);
       add(num3);

       pack();
       setVisible(true);
    }
}

//监听器类
class MyCalcListener implements ActionListener {
    //获取3个变量
    private TextField num1,num2,num3;

    public MyCalcListener(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("");
    }
}

2.7、画笔

package demo04;

import java.awt.*;

public class TestPaint {
    public static void main(String[] args) {
        MyPaint myPaint = new MyPaint();
        myPaint.loadFrame();
        //myPaint.paint();
    }
}
class MyPaint extends Frame{

    public void loadFrame(){
        setBounds(300,300,500,400);
        setVisible(true);
    }

    //画笔
    @Override
    public void paint(Graphics g) {//paint应该是在父类的构造方法里被调用了，所以只要创建实例就会被调用
        //画笔,需要有颜色,画笔可以画画
        g.setColor(Color.cyan);
        g.drawOval(100,100,100,50);//空心椭圆
        g.fillOval(100,100,100,50);//实心椭圆

        //养成习惯,画笔用完,将他还原到最初的颜色
    }
}

2.8、鼠标监听

目的:想要实现鼠标画画!

步骤

监听
- ```
addMouseListener(new MyMouseListener());
```
- new 一个监听类
```
private class MyMouseListener extends MouseAdapter
```
- 重写鼠标的操作方法
  - 将鼠标的操作传到框架中
```
MyFrame myFrame=(MyFrame) e.getSource();
```
  - 找到点的位置坐标
  - 存入数组
  - myFrame.repaint();//刷新
存点
- ArrayList points;
显示
- 框架面板
  - 尺寸，大小，可见性，new数组
- 数组的点显示出去
  - 使用迭代器将数组的点画出来

package demo04;
//鼠标监听事件

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

public class TestMouseLintener {
    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(200,200,500,500);
        //存鼠标点击的点
        points=new ArrayList();
        //鼠标监听器，正对这个窗口
        addMouseListener(new MyMouseListener());
        setVisible(true);
    }

    @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.cyan);
            g.fillOval(point.x,point.y,5,5);
        }
    }

    //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 myFrame=(MyFrame) e.getSource();
            //这个我们点击的时候,就会在界面上产生一个点!画
            // /这个点就是鼠标的点;
            Point point = new Point(e.getX(), e.getY());
            //添加一个点到界面上
            points.add(point);

            ///每次点击鼠标都需要重新画一遍
            myFrame.repaint();//刷新
        }
    }

}

2.9、窗口监听

2.10、键盘监听

package demo04;

import java.awt.*;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

public class TestKeyListener {
    public static void main(String[] args) {
        Frame frame = new Frame();
        frame.setBounds(100,100,300,300);
        frame.setVisible(true);

        frame.addKeyListener(new KeyAdapter() {
            @Override
            public void keyPressed(KeyEvent e) {

                //获得键盘下的键是哪一个,当前的码
                int keyCode = e.getKeyCode();
                System.out.println(keyCode);
                if (keyCode==KeyEvent.VK_UP){
                    System.out.println("wwwwwwwww");
                }
            }
        });
    }
}

3、Swing

3.1、窗口、面板

package demo05;

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

public class JFrameDay91800 {

    //init();初始化
    public void init(){
        JFrame frame = new JFrame("JFrame00");
        frame.setVisible(true);
        frame.setBounds(100,100,200,200);

        //设置文字JLable
        JLabel label = new JLabel("jyvcvjyfvj");
        frame.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 = frame.getContentPane();
        container.setBackground(Color.green);

        //关闭事件
       frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        //建立一个窗口
        new JFrameDay91800().init();
    }
}

3.2、弹窗

JDialog，用来被弹出，默认就有关闭事件!

package demo05;

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

public class JFrameDay91801 {
    public static void main(String[] args) {
        new DialogDemo();
    }
}
//主窗口
class DialogDemo extends JFrame{

    public DialogDemo()  {
        setBounds(200,200,500,500);
        setVisible(true);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        //容器
        Container container = getContentPane();
        //绝对布局
        container.setLayout(null);

        //按钮
        JButton jButton = new JButton("点击弹出一个对话框");
        jButton.setBounds(100,100,50,50);

        ///点击这个按钮的时候,弹出一个弹窗
        jButton.addActionListener(new ActionListener() {//监听器
            @Override
            public void actionPerformed(ActionEvent e) {
               //弹窗
                new MyDialogDemo();
            }
        });
        container.add(jButton);

    }
}

//弹窗的窗口
class MyDialogDemo extends JDialog{

    public MyDialogDemo() {
        setVisible(true);
        setBounds(300,300,300,300);
       // setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);多余的

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

        container.add(new JLabel("5555555555"));
    }
}

3.3、标签

package demo05;

import javax.swing.*;
import java.awt.*;
//图标，需要实现类，Frame继承
public class IconDemo1 extends JFrame implements Icon {

    public static void main(String[] args) {
        new IconDemo1().init();
    }
    private int weight;
    private int height;

    public IconDemo1()  {
    }

    public IconDemo1(int weight, int height)  {
        this.weight = weight;
        this.height = height;
    }

    public void init(){
        IconDemo1 iconDemo1 = new IconDemo1(15, 15);
        //图标放在标签，也可以放在按钮上!
        JLabel label = new JLabel("icontest", iconDemo1, SwingConstants.CENTER);

        Container container = getContentPane();
        container.add(label);
        setVisible(true);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    @Override
    public void paintIcon(Component c, Graphics g, int x, int y) {
        g.fillOval(x,y,weight,height);
    }

    @Override
    public int getIconWidth() {
        return weight;
    }

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

3.4、面板

package demo05;

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

public class JPanelTest extends JFrame {

    public JPanelTest() throws HeadlessException {
        Container container = getContentPane();
        container.setLayout(new GridLayout(2,1,10,10));//后面的参数的意思，间隔距
        JPanel jPanel = new JPanel(new GridLayout(1,3));

        jPanel.add(new JButton("1"));
        jPanel.add(new JButton("1"));
        jPanel.add(new JButton("1"));

        container.add(jPanel);
        setVisible(true);
        setBounds(300,300,300,300);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

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

/文本域
TextArea textArea = new JTextArea( rows: 20，columns: 50);textArea.setText("欢迎学习狂神说Java"');
/ /scroLL面板
JscrollPane scrollPane = new JScrollPane(textArea);container.add (scrollPane);

3.5、按钮·

图片按钮

public JButtonDemoe1( i
Container container = this.getContentPane();/将一个图片变为图标
URL resource = JButtonDemo01.class.getResource(iname:"tx.jpg");Icon icon = new ImageIcon(resource);
//把这个图标放在按钮上
JButton button = new JButton();button. setIcon(icon);
button. setToolTipText("图片按钮");
//add
container.add( button);
this.setVisible(true);this.setsize(500, 300);
this.setDefaultcloseOperation (windowConstants.EXIT_ON_CLOSE);

单选按钮·

package demo06;

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

public class Day92100 extends JFrame {

    public Day92100() throws HeadlessException {
        Container container = getContentPane();

        //单选框
        JRadioButton jRadioButton1 = new JRadioButton("aaaaaaaaa");
        JRadioButton jRadioButton2 = new JRadioButton("bbbbbbbbb");
        JRadioButton jRadioButton3 = new JRadioButton("ccccccccc");

        // 由于单选框只能选样一个,分组,一个组中只能选择一个
        ButtonGroup buttonGroup = new ButtonGroup();
        buttonGroup.add(jRadioButton1);
        buttonGroup.add(jRadioButton2);
        buttonGroup.add(jRadioButton3);

        container.add(jRadioButton1,BorderLayout.NORTH);
        container.add(jRadioButton2,BorderLayout.CENTER);
        container.add(jRadioButton3,BorderLayout.SOUTH);


        setVisible(true);
        setBounds(300,300,400,400);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new Day92100();
    }
}

复选按钮

package demo06;

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

public class Day92101 extends JFrame {

    public Day92101() throws HeadlessException {
        Container container = getContentPane();

        //多选框
        JCheckBox jCheckBox1 = new JCheckBox("11111");
        JCheckBox jCheckBox2 = new JCheckBox("2222");

        container.add(jCheckBox1,BorderLayout.NORTH);
        container.add(jCheckBox2,BorderLayout.SOUTH);
        

        setVisible(true);
        setBounds(300,300,400,400);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new Day92101();
    }
}

3.6、列表

下拉框

package demo06;

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

public class Day92102 extends JFrame {

    public Day92102() throws HeadlessException {
        Container container = getContentPane();

        JComboBox jComboBox = new JComboBox();

        jComboBox.addItem(null);
        jComboBox.addItem("111");
        jComboBox.addItem("222");
        jComboBox.addItem("333");

        container.add(jComboBox);

        setVisible(true);
        setBounds(300,300,400,400);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new Day92102();
    }
}

列表框

package demo06;

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

public class Day92103 extends JFrame {

    public Day92103() throws HeadlessException {
        Container container = getContentPane();

        //生成列表的内容
        String[] contents ={"1","2","3"};
        //列表中需要放入内容
        JList jList = new JList(contents);

        container.add(jList);

        setVisible(true);
        setBounds(300,300,400,400);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new Day92103();
    }
}

·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 demo06;

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

public class Day92104 extends JFrame {

    public Day92104() throws HeadlessException {
        Container container = getContentPane();

        JTextField jTextField1 = new JTextField("zzzzzzzzz");
        JTextField jTextField2 = new JTextField("ffff");

        container.add(jTextField1,BorderLayout.NORTH);
        container.add(jTextField2,BorderLayout.SOUTH);

        setVisible(true);
        setBounds(300,300,400,400);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new Day92104();
    }
}

·密码框

JPasswordField passwordField = new JPasswordField): //**
passwordField.setEchochar( '*");

文本域

标签：GUI,编程,Button,add,frame,import,new,public
From： https://www.cnblogs.com/xin-zhi-suo-xiang/p/17720606.html

GUI编程1

GUI编程1

组件

1、简介

2、AWT

2.1、Awt介绍

2.2、组件和容器

1、Frame

2、面板Panel

3、布局管理器

总结:

4、事件监听

多个按钮，共享一个事件

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

步骤

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

3.4、面板

3.5、按钮·

图片按钮

3.6、列表

·应用场景

3.7、文本框

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