GUI

1. 简介

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

GUI的核心技术：Swing 和AWT

界面不美观，需要jre环境。

2. AWT

2.1 AWT介绍

包含了很多的类和接口！GUI：图形用户界面编程。
元素：窗口、按钮、文本框。
java.awt.

2.2 组件和容器

Frame

package GUI;
import javax.swing.*;
import java.awt.*;
//GUI的第一个界面
public class Frame extends JFrame {
    public Frame(String title) {
    }

    public static void main(String[] args) {
        //Frame JDK 看源码
        Frame frame=new Frame("我的第一个java图形界面窗口");
        //需要设置可见性
        frame.setVisible(true);
        //设置窗口大小
        frame.setSize(400,400);
        //设置背景颜色
        frame.setBackground(new Color(1,1,1));
        //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 GUI;
import java.awt.*;
public class Frame2 {
    public static void main(String[] args) {
        //展示多个窗口
    MyFrame myFrame1= new MyFrame(100,100,200,200,Color.blue);
    MyFrame myFrame2= new MyFrame(300,100,200,200,Color.yellow);
    MyFrame myFrame3= new MyFrame(100,300,200,200,Color.green);
    MyFrame myFrame4= new MyFrame(300,300,200,200,Color.red);
    }
}
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));
        setBackground(color);
        setBounds(x,y,w,h);
        setVisible(true);
    }
}

面板Panel

解决了关闭事件

package GUI;

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

//Panmel 可以堪称是一个空间，但不能单独存在
public class Panel {
    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(Color.green);
        //panel设置坐标，相对于frame
        panel.setBounds(50,50,400,400);
        panel.setBackground(new Color(193,15,60));
        //frame.add(panel)
        frame.add(panel);
        frame.setVisible(true);
        //监听事件，监听窗口关闭事件 
        frame.addWindowListener(new WindowAdapter() {
            //窗口点击关闭时要做的事情
            @Override
            public void windowClosing(WindowEvent e) {
                //结束程序
                super.windowClosing(e);
            }
        });
    }

    private void setBackground(Color color) {
    }

    private void setBounds(int i, int i1, int i2, int i3) {
    }
}

2.3. 布局管理器

流式布局

 package GUI;
 
 import java.awt.*;
 
 public class FlowLayout {
     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 java.awt.FlowLayout());
         frame.setSize(200,200);
         //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 GUI;
import java.awt.*; 
public class BorderLayout {
     public static void main(String[] args) {
         Frame frame=new Frame("BorderLayout");
         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(200,200);
         frame.setVisible(true);
     }
 }
 存疑！

表格式布局

package GUI;
import java.awt.*; 
public class GridLayout {
     public static void main(String[] args) {
         Frame frame=new Frame("GridLayout");
         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 java.awt.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);
     }
 }

练习

package GUI;

import java.awt.*;
import java.awt.GridLayout;
import java.awt.BorderLayout;

//练习的demo讲解
public class Demo {
    public static void main(String[] args) {
        //总Frame
        Frame frame = new Frame();
        frame.setSize(400, 300);
        frame.setLocation(300, 400);
        frame.setBackground(Color.BLACK);
        frame.setVisible(true);
        frame.setLayout(new GridLayout(2, 1));
        //四个面板
        Panel panel1 = new Panel(new BorderLayout());
        Panel panel2 = new Panel(new GridLayout(2, 1));
        Panel panel3 = new Panel(new BorderLayout());
        Panel panel4 = new Panel(new GridLayout(2, 1));
        //上面
        panel1.add(new Button("East-2"), BorderLayout.EAST);
        panel1.add(new Button("West-2"), BorderLayout.WEST);
        panel2.add(new Button("p2-btn-1"));
        panel2.add(new Button("p2-btn-2"));
        panel1.add(panel2, GUI.BorderLayout.CENTER);
        //下面
        panel3.add(new Button("East-2"), BorderLayout.EAST);
        panel3.add(new Button("East-2"), BorderLayout.WEST);
        //中间4个
        for (int i = 0; i < 4; i++) {
            panel4.add(new Button("for-" + i));
        }
        panel3.add(panel4, GUI.BorderLayout.CENTER);
        frame.add(p1);
        frame.add(p3);
    }
}
存疑！

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。
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 GUI;

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 Event {
    public static void main(String[] args) {
        //按下按钮，触发一些事件
        Frame frame=new Frame();
        Button button=new Button();
        //因为，addActionListener()需要一个ActionListener，所以我们需要构造一个ActionListener
        MyActionListener myActionListener=new MyActionListener();
        button.addActionListener(myActionListener);
        frame.add(button,BorderLayout.CENTER);
        frame.pack();
        frame.setVisible(true);
        windowClose(frame);//关闭窗口
        frame.setVisible(true);
    }
    //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 MyActionListener implements ActionListener{
    @Override
    public void actionPerformed(ActionEvent e) {
        System.out.println("aaa");
    }
}

package GUI;
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");
        //可以显示的定义触发会返回发命令，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
        button2.setActionCommand("button2-stop");
        MyMoniter myMonitor=new MyMoniter();
        button1.addActionListener(myMonitor);
        button2.addActionListener(myMonitor);
        frame.add(button1,BorderLayout.NORTH);
        frame.add(button1,BorderLayout.SOUTH);
    }
}
//事件监听
class MyMoniter implements ActionListener {
    @Override
    public void actionPerformed(ActionEvent e) {
        //e.getActionCommand();获得按钮的信息
        System.out.println("按钮被点击了:mag" + e.getActionCommand());
        e.getActionCommand();
        if (e.getActionCommand().equals("start")) ;
        {
        }
    }
}

2.5. 输入框监听事件TextField

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

public class TestText01 {
    public static void main(String[] args) {
        //启动
        new MyFrame1();
    }

    public void addActionLinsterner(MyActionLinsterner2 myActionLinsterner2) {
    }
}
class MyFrame1 extends Frame{
    public MyFrame1(){
        TestText01 textFeild=new TestText01();
        add(textFeild);
        //监听这个文本框输入的文字
        MyActionLinsterner2 myActionLinsterner2=new MyActionLinsterner2();
        //按下enter就会触发输入框的事件
        textFeild.addActionLinsterner(myActionLinsterner2);
        //设置置换密码
        //textFeild.setEchoChar('*');
        setVisible(true);
        pack();
    }

    private void add(TestText01 textFeild) {
    }
}
class MyActionLinsterner2 implements ActionListener{
    @Override
    public void actionPerformed(ActionEvent e) {
        TextField field=(TextField) e.getSource();//获得一些资源,返回的一个对象
        System.out.println(field.getText());//获得输入文本框
        field.setText("");//null
    }
}

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。

class A extends B{
}
classA{
public B b;
}

计算器目前代码

package GUI;

import java.awt.*;
import java.awt.FlowLayout;
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
static 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(10);
        //1个按钮
        Button button=new Button("=");
        button.addActionListener(new MyCalculatorListener(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 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.将这个值加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("");
    }
}

完全改造为面向对象写法

package GUI;

import java.awt.*;
import java.awt.FlowLayout;
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
 static class Calculator extends Frame{
        //属性
    TextField num1,num2,num3;
    //方法
    public  void loadFrame(){
        //3个文本框
        TextField num1=new TextField(10);//字符数
        TextField num2=new TextField(10);
        TextField num3=new TextField(10);
        Button button=new Button("=");
        Label label=new Label("+");
        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{
    //获取计算器这个对象,在一个类中组合另外一个类
    TestCalc.Calculator calculator=null;
    public MyCalculatorListener(TestCalc.Calculator calculator){
        this.calculator=calculator;
    }
    @Override
    public void actionPerformed(ActionEvent e) {
//1.获得加数和被加数
          //2.将这个值加法运算后放到第三个框
        //3.清除前两个框
       Integer n1=Integer.parseInt(calculator.num1.getText());
       Integer n2=Integer.parseInt(calculator.num2.getText());
       calculator.num3.setText(""+(n1+n2));
       calculator.num1.setText("");
       calculator.num2.setText("");
      

    }
}

内部类：更好的包装

package GUI;

import java.awt.*;
import java.awt.FlowLayout;
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
 static class Calculator extends Frame{
        //属性
    TextField num1,num2,num3;
    //方法
    public  void loadFrame(){
        //3个文本框
        TextField num1=new TextField(10);//字符数
        TextField num2=new TextField(10);
        TextField num3=new TextField(10);
        Button button=new Button("=");
        Label label=new Label("+");
        button.addActionListener(new MyCalculatorListener(new MyCalculatorListener()));
        //布局
        setLayout(new FlowLayout());
        add(num1);
        add(label);
        add(num2);
        add(button);
        add(num3);
        pack();
        setVisible(true);
    }
    }
}
//监听器类
private class MyCalculatorListener implements ActionListener{

    @Override
    public void actionPerformed(ActionEvent e) {
//1.获得加数和被加数
        //2.将这个值加法运算后放到第三个框
        //3.清除前两个框
       Integer n1=Integer.parseInt(num1.getText());
       Integer n2=Integer.parseInt(num2.getText());
       num3.setText(""+(n1+n2));
       num1.setText("");
       num2.setText("");

    }
}

2.7 画笔Panit

package GUI;

import java.awt.*;

public class TestPanit {
    public static void main(String[] args) {
        new NyPanit().loadFrame();
    }
}
class NyPanit extends Frame{
    public void loadFrame(){
        setBounds(200,200,600,500);
        setVisible(true);
    }
    //画笔
    @Override
    public void paint(Graphics g) {
       //画笔，需要有颜色，画笔可以画图画
       // g.setColor(Color.red);
        g.drawOval(100,100,100,100);
        g.fillOval(100,100,100,100);//实心的圆
        //养成习惯，画笔用完将它还原成最初的颜色
        
    }
}

2.8 鼠标监听事件

package GUI;

import javafx.beans.binding.ListExpression;

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

//测试鼠标监听
public class TestMouseListener {
    public static void main(String[] args) {
        new MyFrame("画图");
    }
}
class MyFrame extends Frame{
    //画画需要画笔，需要鼠标监听当前的位置，需要集合来存放这个点
    ArrayList points;
    public  MyFrame(String title){
        super(title);
        setBounds(200,200,400,300);
        // 存鼠标点击的点
         points = new ArrayList<>();
        setVisible(true);
        //鼠标监听器，针对这个窗口
        this.addMouseListener(new MyMouseListener());
    }

    @Override
    public void paint(Graphics g) {
        //画笔，鼠标监听事件
        Iterator iterator=points.iterator();
        while (iterator.hasNext()){
            Point point=(Point)iterator.next();
            g.setColor(Color.BLUE);
            g.fillOval(point.x,point.y,0,0);
        }
    }
    //添加一个点到界面上
    public void addPoint(Point point){
        points.add(point);
    }
    //适配器模式
    private  class MyMouseListener extends MouseAdapter{
        //鼠标 按下，按住不放，弹起

        @Override
        public void mousePressed(MouseEvent e) {
            MyFrame myFrame= (MyFrame) e.getSource();
            //这里我们点击的时候，就会在界面上产生一个点
            //这个点就是鼠标的点
            new Point(e.getX(),e.getY());
            //每次点击鼠标都需要重新画一次
            myFrame.repaint();//刷新
        }
    }
}

2.9 窗口监听事件

package GUI;

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.blue);
        setBounds(100,100,200,200);
        setVisible(true);
        addWindowListener(new MyWindowListener());
    }
    class MyWindowListener extends WindowAdapter {
        @Override
        public void windowClosing(WindowEvent e) {
            setVisible(true);//隐藏窗口，通过按钮，隐藏当前窗口
            System.exit(0);//正常退出
        }
    }
}

2.10 键盘监听

package GUI;

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);
        this.addKeyListener(new KeyAdapter() {
            //键盘按下
            @Override
            public void keyPressed(KeyEvent e) {
                //获得键盘按下哪个键
               int keyCode=e.getKeyCode();//不需要去记录这个数值，直接去VK_XXX
                System.out.println(keyCode);
                if (keyCode==KeyEvent.VK_UP){
                    System.out.println("你按下了上键");
                }
                //根据按下的不同操作，产生不同的结果
            }
        });
    }
}

3.Swing

3.1 窗口、面板

package GUI.lesson;

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

public class JFrameDemo {
    //init();初始化
    public void init(){
       JFrame frame=new JFrame("这是一个JFrame");
       frame.setVisible(true);
       frame.setBounds(100,100,200,200);
       frame.setBackground(Color.cyan);
       //设置文字Jlable
        JLabel label=new JLabel("欢迎来到狂神说Java系列");
        frame.add(label);
       //关闭事件
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        //建立一个窗口
    }
}

标签居中

package GUI.lesson;

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(10,10,200,300);
        this.setVisible(true);
        JLabel label=new JLabel("欢迎来到狂神说Java系列");
        this.add(label);
        //让文本标签剧中
        label.setHorizontalAlignment(SwingConstants.CENTER);
        //获得一个容器
        Container container= this.getContentPane();
        container.setBackground(Color.YELLOW);
    }
}

3.2 弹窗

JDialog，用来被弹出，默认就有关闭事件

package GUI.lesson;

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

    public static void main(String[] args) {
        new DialogDemo();
    }
}
//弹窗的窗口
class MyDialogDemo extends JDialog{
    public MyDialogDemo() {
        this.setVisible(true);
        this.setBounds(100,100,500,500);
       // this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        Container container=this.getContentPane();
        container.setLayout(null);
        container.add(new Label("秦老师带你学java"));
    }
}

3.3 标签

Label

new JLabel("xxx");

Icon

package GUI.lesson;

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

//图标，需要实现类，Frame
public class IconDemo extends JFrame implements Icon {
    private int width;
    private  int height;
    public IconDemo(int width,int height){
        this.height=height;
        this.width=width;
    }

    public IconDemo() {
        
    }

    public void init(){
        IconDemo iconDemo =new IconDemo(15,15);
        //图标放在标签，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);
    }
    public static void main(String[] args) {
        new IconDemo().init();
    }

    @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Icon

package GUI.lesson;

import javax.swing.*;
import java.awt.*;
import java.net.URL;
public class ImageIconDemo extends JFrame {
    public ImageIconDemo(){
        //获取图片的地址
        JLabel label=new JLabel("ImageIcon");
        URL url= ImageIconDemo.class.getResource("13.png");
        new ImageIcon(url);
        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();
    }
}

3.4 面板

JPanel

package GUI.lesson;

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 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 JButton("1"));
        panel1.add(new JButton("1"));
        panel1.add(new JButton("1"));
        panel2.add(new JButton("2"));
        panel2.add(new JButton("2"));
        panel3.add(new JButton("1"));
        panel3.add(new JButton("1"));
        panel4.add(new JButton("1"));
        panel4.add(new JButton("1"));
        panel4.add(new JButton("1"));
        panel4.add(new JButton("1"));
        panel4.add(new JButton("1"));
        panel4.add(new JButton("1"));
        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);
    }

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

JScrollPanel

package GUI.lesson;

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

public class JScrollPanelDemo extends JFrame {
    public JScrollPanelDemo()  {
        Container container=this.getContentPane();
        //文本域
        JTextArea textArea=new JTextArea(20,50);
        textArea.setText("欢迎学习狂神说Java");
        //Scroll面板
        JScrollPane scrollPane=new JScrollPane();
        container.add(scrollPane);
        container.add(textArea);
        this.setVisible(true);
        this.setBounds(100,100,300,300);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
    public static void main(String[] args) {
        new JScrollPanelDemo();
    }
}

3.5 按钮

图片按钮

package GUI.lesson;

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

public class JButtonDemo extends JFrame {
    public JButtonDemo()  {
        Container container=this.getContentPane();
        //将一个图片便为图标
        URL resouce=JButton.class.getResource("13.png");
        Icon icon=new ImageIcon(resouce);
        //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);
    }

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

单选按钮

JRadioButton

package GUI.lesson;

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

public class JButtonDemo02 extends JFrame {
    public JButtonDemo02()  {
        Container container=this.getContentPane();
        //将一个图片便为图标
        URL resouce=JButton.class.getResource("13.png");
        Icon icon=new ImageIcon(resouce);
   //单选框
       JRadioButton jRadioButton01= new JRadioButton("JRadioButton01");
       JRadioButton jRadioButton02= new JRadioButton("JRadioButton02");
       JRadioButton jRadioButton03= new JRadioButton("JRadioButton03");
       //由于单选框只能选择一个，分组,一个组中只能选择一个
        ButtonGroup group=new ButtonGroup();
        group.add(jRadioButton01);
        group.add(jRadioButton02);
        group.add(jRadioButton03);
        container.add(jRadioButton01,BorderLayout.CENTER);
        container.add(jRadioButton02,BorderLayout.NORTH);
        container.add(jRadioButton03,BorderLayout.SOUTH);
        this.setVisible(true);
        this.setSize(500,300);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
       new JButtonDemo02();
    }
}

复选按钮

JCheckBox

package GUI.lesson;

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

public class JButtonDemo03 extends JFrame {
    public JButtonDemo03()  {
        Container container=this.getContentPane();
        //将一个图片变成图标
        URL resouce=JButtonDemo.class.getResource("13.png");
        Icon icon=new ImageIcon(resouce);
        //多选框
        JCheckBox checkBox01=new JCheckBox("checkBox01");
        JCheckBox checkBox02=new JCheckBox("checkBox02");
        container.add(checkBox01,BorderLayout.NORTH);
        container.add(checkBox02,BorderLayout.SOUTH);
        this.setVisible(true);
        this.setSize(500,300);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new JButtonDemo03();
    }
}

3.6 列表

下拉框

JComboBox

package GUI.lesson;

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

public class TextComboboxDemo extends JFrame {
    public TextComboboxDemo() throws HeadlessException {
        Container container=this.getContentPane();
        JComboBox status=new JComboBox<>();
        status.addItem(null);
        status.addItem("正在热映");
        status.addItem("已下架");
        status.addItem("即将下架");
        container.add(status);
        this.setVisible(true);
        this.setSize(500,200);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

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

列表框

package GUI.lesson;

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

public class TestComboxDemo02 extends JFrame {
    public void TextComboboxDemo02()  {
        Container container=this.getContentPane();
  //生产列表内容
        String[] contents={"1","2","3"};
        //列表中需要放入内容
        JList list=new JList(contents);
        container.add(list);
    this.setVisible(true);
        this.setSize(500,200);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new TestComboxDemo02();
    }
}

应用场景
- 选择地区，或者一些个单选项。
- 列表，展示信息，一般是动态扩容。

3.7 文本框

文本框

package GUI.lesson;

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

public class TestTextDemo01 extends JFrame {
    public void TextTextDemo01()  {
        Container container=this.getContentPane();
       JTextField textField=new JTextField("hello");
       JTextField textField2=new JTextField("word",20);
       container.add(textField,BorderLayout.NORTH);
       container.add(textField2,BorderLayout.SOUTH);
        this.setVisible(true);
        this.setSize(500,200);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new TestTextDemo01();
    }
}

密码框

package GUI.lesson2;

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

public class TestTextDemo02 extends JFrame {
    public void TextTextDemo02()  {
        Container container=this.getContentPane();
       JPasswordField passwordField=new JPasswordField();
       passwordField.setEchoChar('*');
       container.add(passwordField);
        this.setVisible(true);
        this.setSize(500,200);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new TestTextDemo02();
    }
}

文本域

package GUI.lesson;

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

public class JScrollPanelDemo extends JFrame {
    public JScrollPanelDemo()  {
        Container container=this.getContentPane();
        //文本域
        JTextArea textArea=new JTextArea(20,50);
        textArea.setText("欢迎学习狂神说Java");
        //Scroll面板
        JScrollPane scrollPane=new JScrollPane();
        container.add(scrollPane);
        container.add(textArea);
        this.setVisible(true);
        this.setBounds(100,100,300,300);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new JScrollPanelDemo();0
    }
}

贪吃蛇

帧：如果时间片足够小，就是动画，一秒30帧 60帧。连起来是动画，拆开就是静态图片。

键盘监听

定时器Timer

package GUI.snake;

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

//数据中心
public class Data {
    //相对路径  tx.jpg
    //绝对路径  '/' 相当于当前项目
    public static URL headerURL=Data.class.getResource("statics/header.png");
    public  static ImageIcon header =new ImageIcon(headerURL);
    public static URL upURL=Data.class.getResource("statics/up.png");
    public static URL downURL=Data.class.getResource("statics/down.png");
    public static URL leftURL=Data.class.getResource("statics/left.png");
    public static URL rightURL=Data.class.getResource("statics/right.png");
    public  static ImageIcon up =new ImageIcon(upURL);
    public  static ImageIcon down =new ImageIcon(downURL);
    public  static ImageIcon left =new ImageIcon(leftURL);
    public  static ImageIcon right =new ImageIcon(rightURL);
    public static URL sheshenURL=Data.class.getResource("statics/sheshen.png");
    public  static ImageIcon sheshen =new ImageIcon(sheshenURL);
    public static URL foodURL=Data.class.getResource("statics/food.png");
    public  static ImageIcon food =new ImageIcon(sheshenURL);
}

package GUI.snake;

import javax.swing.*;

//游戏的主启动类
public class StartGame {
    public static void main(String[] args) {
        JFrame frame=new JFrame();
        frame.setBounds(10,10,900,720);
        frame.setResizable(false);//窗口大小不可变
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        //正常的游戏界面应该在面板上
        frame.add(new GamePanel());
        frame.setVisible(true);
    }
}

package GUI.snake;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.Random;

import static java.awt.event.KeyEvent.VK_SPACE;

//游戏的面板
public class GamePanel extends JPanel implements KeyListener , ActionListener {
    //定义蛇的数据结构
    int length;//蛇的长度
    int[] snakeX = new int[600];//蛇的X坐标
    int[] snakeY = new int[500];//蛇的Y坐标
    String fx;
    //食物的坐标
    int foodx;
    int foody;
    int score;//成绩
    Random random=new Random();
    boolean isStart = false;//默认是不开始
    boolean isFall=false;//游戏失败
    //定时器  以毫秒为单位1000毫秒=1秒
    Timer timer = new Timer(100, this);//100毫秒执行一次

    //初始化方法
//构造器
    public GamePanel() {
        init();
        //获得焦点和键盘事件
        this.setFocusable(true);//获得焦点事件
        this.addKeyListener(this);//获得键盘监听事件
        timer.start();
    }

    public void init() {
        length = 3;
        snakeX[0] = 100;
        snakeY[0] = 100;//脑袋坐标
        snakeX[1] = 100;
        snakeY[1] = 100;//第一个身体的坐标
        snakeX[2] = 100;
        snakeY[2] = 100;//第二个身体的坐标
        fx = "R";//初始方向向右
        //把食物随机分布在界面上！
        foodx=25+25*random.nextInt(34);
        foody=75+25*random.nextInt(24);
score=0;
    }

    //绘制面板,我们游戏中的所有东西，都是用这个画笔来画
    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);//清屏
        //绘制静态面板
        this.setBackground(Color.WHITE);
        Data.header.paintIcon(this, g, 25, 11);//头部广告栏画上去
        g.fillRect(25, 75, 850, 600);//默认的游戏界面
        //画积分
        g.setColor(Color.white);
        g.setFont(new Font("微软雅黑",Font.BOLD,18));
        g.drawString("长度"+length,750,35);
        g.drawString("分数"+score,750,50);
        //画食物
        Data.food.paintIcon(this,g,foodx,foody);

        //把小蛇画上去
        if (fx.equals("R")) {
            Data.sheshen.paintIcon(this, g, snakeX[0], snakeY[0]);//蛇头初始化向右
        } else if (fx.equals("L")) {
            Data.right.paintIcon(this, g, snakeX[0], snakeY[0]);
        } else if (fx.equals("U")) {
            Data.right.paintIcon(this, g, snakeX[0], snakeY[0]);
        } else if (fx.equals("D")) {
            Data.right.paintIcon(this, g, snakeX[0], snakeY[0]);
        }
        for (int i = 1; i < length; i++) {
            Data.sheshen.paintIcon(this, g, snakeX[i], snakeY[i]);
        }

        //游戏状态
        boolean isStart = false;
        if (isStart == false) {
            g.setColor(Color.WHITE);
            g.setFont(new Font("微软雅黑", Font.BOLD, 40));//设置字体
            g.drawString("按下空格开始游戏", 300, 300);
        }
        if (isFall){
            g.setColor(Color.RED);
            g.setFont(new Font("微软雅黑", Font.BOLD, 40));//设置字体
            g.drawString("失败，按下空格重新开始", 300, 300);
        }
    }
    //监听事件--需要通过固定的事件来判断1S10次
    @Override
    public void actionPerformed(ActionEvent e) {
        if (isStart&&isFall==false) {
            //吃食物
            if (snakeX[0]==foodx&&snakeY[0]==foody){
                length++;//长度+1
                //分数+10
                score=score+10;
                //再次随机食物
                foodx=25+25*random.nextInt(34);
                foody=75+25*random.nextInt(24);
            }
            //如果游戏是开始状态，就让小蛇动起来
            //移动
            for (int i = length - 1; i > 0; i--) {
                snakeX[i] = snakeX[i - 1];//向前移动一节
                snakeY[i] = snakeY[i - 1];
            }
            //走向
            if (fx.equals("R")) {
                snakeX[0] = snakeX[0] + 25;
                if (snakeX[0] > 850) {
                    snakeX[0] = 25;
                }
            } else if (fx.equals("L")) {
                snakeX[0] = snakeX[0] - 25;
                if (snakeX[0] < 25) {
                    snakeX[0] = 850;
                } else if (fx.equals("U")) {
                    snakeY[0] = snakeY[0] - 25;
                    if (snakeY[0] < 75) {
                        snakeY[0] = 650;
                    } else if (fx.equals("D")) {
                        snakeY[0] = snakeY[0] + 25;
                        if (snakeY[0] > 650) {
                            snakeY[0] = 75;
                        }
                    }
                }
                snakeX[0] = snakeX[0] + 25;
                //边界判断
                //失败判断，撞到自己就失败
                for (int i = 1; i < length; i++) {
                    if (snakeX[0]==snakeX[i]&&snakeY[0]==snakeY[i]){
                        isFall=true;
                    }
                }
                repaint();//重画页面
            }
            timer.start();
        }
    }

    @Override
    public void keyTyped(KeyEvent e) {

    }

    //键盘监听器
    @Override
    public void keyPressed(KeyEvent e) {
        int keyCode = e.getKeyCode();
        if (keyCode == VK_SPACE){
            if (isFall){
                //重新开始
                isFall=false;
                init();
            }
        }else {
            isStart=!isStart;//取反
        }
        if (keyCode == VK_SPACE) {
            isStart = !isStart;//取反
            repaint();
        }
        //小蛇移动
        if (keyCode == KeyEvent.VK_UP) {
            fx = "U";
        } else if (keyCode == KeyEvent.VK_DOWN) {
            fx = "D";
        } else if (keyCode == KeyEvent.VK_LEFT) {
            fx = "L";
        } else if (keyCode == KeyEvent.VK_RIGHT) {
            fx = "R";
        }
    }

    @Override
    public void keyReleased(KeyEvent e) {

    }
}

posted @ 2023-06-08 16:34 努力的小L 阅读(34) 评论(0) 收藏举报

刷新页面返回顶部

sx-xiaoL

GUI

GUI

1. 简介

2. AWT

2.1 AWT介绍

2.2 组件和容器

2.3. 布局管理器

流式布局

东西南北中

表格式布局

2.4. 事件监听

2.5. 输入框监听事件TextField

2.6 简易计算器，组合+内部类回顾复习

2.7 画笔Panit

2.8 鼠标监听事件

2.9 窗口监听事件

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

3.6 列表

3.7 文本框

贪吃蛇

公告

sx-xiaoL

GUI

GUI

1. 简介

2. AWT

2.1 AWT介绍

2.2 组件和容器

2.3. 布局管理器

流式布局

东西南北中

表格式布局

2.4. 事件监听

2.5. 输入框监听事件TextField

2.6 简易计算器，组合+内部类回顾复习

2.7 画笔Panit

2.8 鼠标监听事件

2.9 窗口监听事件

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

3.6 列表

3.7 文本框

贪吃蛇

公告

3.1 窗口、面板