7-GUI编程入门到游戏实战【狂神】


Awt是底层自带的类-需要JRE,JRE包含自带的类,界面不美观
Swing封装了好看的类,可以不需要JRE

Awt

1,包含了很多类和接口!GUI
2、元素:窗口,按钮,文本框
3、java.awt-是java中自己的一些类,也就是JRE(JVM+一些自带的类)

组件和容器

Frame

package GUI;

import java.awt.*;

//GUI第一个界面
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);
        //设置大小
        frame.setSize(400, 400);
        //设置背景颜色
        frame.setBackground(new Color(75, 193, 193));
        //弹出初始位置
        frame.setLocation(200, 200);
        //设置大小不可变
        frame.setResizable(false);


    }
}

创建多个窗口
package GUI;

import java.awt.*;

//GUI第一个界面

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");

        //设置大小
        frame.setSize(400, 400);

        //弹出初始位置
        frame.setLocation(200, 200);
        //设置背景颜色
        frame.setBackground(new Color(75, 193, 193));
        //设置大小不可变
        frame.setResizable(false);
        //需要设置可见性
        frame.setVisible(true);


    }
}
package GUI;

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

import static javax.swing.text.StyleConstants.setBackground;

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



       }

}
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);
    }

}

Panel面板讲解

package GUI;

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

//panel 可以看成一个空间,但是不能单独存在
public class TestPanel {
    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(new Color(105, 193, 75));
        //panel设置坐标,相对于frame
        panel.setBounds(50, 50, 400, 400);
        panel.setBackground(new Color(193, 89, 75));
        //添加panel到frame
        frame.add(panel);
        frame.setVisible(true);
        //监听事件,监听窗口关闭事件,addWindowListener 是 Frame 类的一个方法,用于为窗口添加一个窗口事件监听器
        frame.addWindowListener(new WindowAdapter() {//这里使用了匿名内部类的方式创建了一个 WindowAdapter 类的实例。WindowAdapter 是一个抽象类,它实现了 WindowListener 接口,并为接口中的所有方法提供了空实现。通过创建 WindowAdapter 的匿名内部类实例,我们可以只重写我们关心的方法,而不必为所有方法提供实现。
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);//Java 中用于终止当前 Java 虚拟机(JVM)的方法
            }
        });

    }
}

3种布局管理器

流式布局

package GUI;

import java.awt.*;

public class TestFlowLayout {
    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(FlowLayout.LEFT));
        frame.setSize(300, 300);
        //添加组件

        frame.add(button1);
        frame.add(button2);
        frame.add(button3);
        frame.setVisible(true);


    }
}

东西南北中

package GUI;

import java.awt.*;

public class TestBorderLayout {
    public static void main(String[] args) {
        Frame frame = new Frame();
        //组件-按钮
        Button button1 = new Button("East");
        Button button2 = new Button("West");
        Button button3 = new Button("South");
        Button button4 = new Button("North");
        Button button5 = new Button("Center");
        frame.add(button1, BorderLayout.EAST);
        frame.add(button2, BorderLayout.WEST);
        frame.add(button3, BorderLayout.SOUTH);
        frame.add(button4, BorderLayout.NORTH);
        frame.add(button5, BorderLayout.CENTER);

        frame.setSize(300, 300);

        frame.setVisible(true);


    }
}

表格布局

package GUI;

import java.awt.*;

public class TestGridLayout {
    public static void main(String[] args) {
        Frame frame = new Frame();
        //组件-按钮
        Button button1 = new Button("btn1");
        Button button2 = new Button("btn2");
        Button button3 = new Button("btn3");
        Button button4 = new Button("btn4");
        Button button5 = new Button("btn5");
        Button button6 = new Button("btn6");
       frame.setLayout(new GridLayout(3,2));
       frame.add(button1);
       frame.add(button2);
       frame.add(button3);
       frame.add(button4);
       frame.add(button5);
       frame.add(button6);

        frame.setSize(300, 300);

        frame.setVisible(true);


    }
}

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;

public class TestActionEvent {
    public static void main(String[] args) {
        //按下按钮,触发事件
        Frame frame = new Frame();
        Button button = new Button();
        //因为,addActionListener()方法的参数是一个ActionListener接口的实现类,所以,我们需要创建一个ActionListener的实现类,并重写其中的actionPerformed()方法。
        MyActionListener myActionListener = new MyActionListener();
        button.addActionListener(myActionListener);
        frame.add(button, BorderLayout.CENTER);
        frame.pack();
        windowClose(frame);
        frame.setVisible(true);

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

        });
    }
}
class MyActionListener implements ActionListener {
    @Override
    public void actionPerformed(ActionEvent e) {
        System.out.println("aaa");

    }
}

多个按钮共享一个事件

输入框事件监听

package GUI;

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

public class TestText01 {
    public static void main(String[] args) {
        //只管启动
        new MyFrame();

    }
}
class MyFrame extends Frame {
    public MyFrame() {
        TextField textField = new TextField();//建立一个文本框
        add(textField);//也能写成this.add(textField),就是指这个MyFrame实例化后的对象
        //监听这个文本框输入的文字
        MyActionListener myActionListener2 = new MyActionListener();
        //按下回车键也能触发输入框监听
        textField.addActionListener(myActionListener2);

        //设置替换编码
        textField.setEchoChar('*');
        setVisible(true);
        pack();
    }
}
class MyActionListener implements ActionListener {
    @Override
    public void actionPerformed(ActionEvent e) {
        TextField textField = (TextField) e.getSource();//获得一些资源,返回一个对象
        System.out.println(textField.getText()); //获得输入的文字
        textField.setText(""); //清空输入框

    }

}

简易计算器
组合大于继承
package GUI;

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

public class TestCalc {
public static void main(String[] args) {
new Calculator();
}
}
//计算器类
//万物皆对象

class Calculator extends Frame  {
    public Calculator() {
      //3个文本框
        TextField num1 = new TextField(10);
        TextField num2 = new TextField(10);
        TextField num3 = new TextField(20);
        //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(流式布局)
        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;
    private TextField num2;
    private TextField num3;
    public MyCalculatorListener(TextField num1, TextField num2, TextField num3) {
        this.num1 = num1;
        this.num2 = num2;
        this.num3 = num3;

    }

    @Override
    public void actionPerformed(ActionEvent e) {

        //获得加数和被加数
        Integer num1Value = Integer.parseInt(num1.getText());
        Integer num2Value = Integer.parseInt(num2.getText());
        //将这个值+法运算后,放到第三个框
       num3.setText(String.valueOf(num1Value + num2Value));

        //清除前两个框
        num1.setText("");
        num2.setText("");
    }
}

画笔

package GUI;

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);
    }
    @Override
    public void paint(Graphics g) {
       //画笔,需要有颜色
        g.setColor(Color.black);
        g.drawOval(100, 100, 100, 100);
        g.fillOval(100, 100, 100, 100);//实心
        g.setColor(Color.red);
        g.fillRect(150, 200, 200, 200);

    }
}

鼠标监听事件

目的,实现鼠标画画

package GUI;

import javax.swing.*;
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;

//鼠标监听事件
public class TestMouseListener {
    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(200,200,400,300);
        //存鼠标点击的点
       points = new ArrayList<>();
        //鼠标监听器,正对这个窗口
        setVisible(true);
        this.addMouseListener(new MyMouseListener());



    }
    @Override
    public void paint(Graphics g) {
            //画画的代码
            Iterator iterator = points.iterator();
            while (iterator.hasNext()) {
                Point point = (Point) iterator.next();
                g.setColor(Color.RED);
                g.fillOval(point.x, point.y, 10, 10);
            }

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


    private class MyMouseListener extends MouseAdapter {
            //鼠标 按下 弹起,按住不放
        @Override
        public void mousePressed(MouseEvent e) {
            MyFrame frame =(MyFrame)e.getSource();
            //我们点击的时候,就会在界面产生一个点
            //这个点就是鼠标点击的位置
            frame.addPoint(new Point(e.getX(), e.getY()));
            //每次点击鼠标时,都需要重新画
            frame.repaint();

    }

    }

}

窗口监听事件

package GUI;

import javax.swing.*;
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, 500, 500);
        setVisible(true);
        //addWindowListener(new MyWindowListner());//两种写法,一种是匿名内部类,一种是内部类,
        //如果这个逻辑只适用于 WindowFrame 类,那么在 WindowFrame 类中定义内部类是一个合理的选择。如果这个逻辑需要在多个类中复用,那么可以考虑将其提取为一个独立的类。
        addWindowListener(//其实都是默认有this的,可以省略
                new WindowAdapter() {
                    @Override
                    public void windowClosing(WindowEvent e) {
                        System.out.println("你点了X");
                    }
                }
        );

    }

    class  MyWindowListner extends WindowAdapter {//内部类
        @Override
        public void windowClosing(WindowEvent e) {
            setVisible(false);//隐藏窗口,通过按钮隐藏
            System.exit(0);//正常退出
        }
    }
}
//内部类:
//好处:
//如果MyWindowListener需要在其他地方复用,或者需要实现多个接口,使用内部类是一个很好的选择。
//内部类可以有自己的成员变量和方法,可以更灵活地处理逻辑。
//代码的可读性较高,尤其是在实现多个接口或需要复杂逻辑时。
//适用场景: 当需要复用WindowListener或者实现多个接口时,内部类更为合适。
//匿名内部类:
//好处:
//代码更加简洁明了,尤其是在只需要简单实现一个接口的方法的情况下。
//无需额外的命名,直接在需要的地方实现接口。
//适用场景: 当实现非常简单,不需要复用,且只在一个地方使用时,匿名内部类是一个不错的选择。

键盘监听事件

package GUI;

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

public class TestKeyListener {
    public static void main(String[] args) {
        new KeyFrame();
    }
}
class KeyFrame extends Frame {
    public KeyFrame() {
        setBounds(100, 100, 450, 300);
        setVisible(true);
        addKeyListener(new KeyAdapter() {
            //键盘按下事件
            @Override
            public void keyPressed(KeyEvent e) {
                int keyCod=e.getKeyCode();
                if (keyCod==KeyEvent.VK_UP) {
                    System.out.println("上");
                }
            }
        });
    }
}

Swing

窗口、面板

package GUI;

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

public class JFrameDemo {
    //init();初始化
    public void init() {
        //顶级窗口
        JFrame frame = new JFrame("这是一个JFrameDemo");
        frame.setVisible(true);
        frame.setBounds(100, 100, 450, 300);
        frame.setBackground(Color.LIGHT_GRAY);
        //设置文字
        JLabel label = new JLabel("这是一个JFrameDemo", JLabel.CENTER);
        frame.add(label);
        //容器实例化

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

    public static void main(String[] args) {
        new JFrameDemo().init();
    }
}
package GUI;

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(100, 100, 450, 300);
        this.setVisible(true);
        JLabel jLabel = new JLabel("Hello World!");
        this.add(jLabel);
        //让文本标签剧中
        jLabel.setHorizontalAlignment(JLabel.CENTER);

        //获得一个容器
        Container contentPane = this.getContentPane();
       contentPane.setBackground(Color.YELLOW);

    }
}

JDialog弹窗

package GUI;

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(400, 300);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        //JFrame,放东西的窗口
        Container container = this.getContentPane();
        //绝对布局
        container.setLayout(null);
        //按钮
        JButton button = new JButton("弹出对话框");
        button.setBounds(10, 10, 100, 30);
        //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 Dialog();
          }
       });
        container.add(button);

    }
    public static void main(String[] args) {
        new DialogDemo();
    }
}
//弹窗的窗口
class Dialog extends JDialog {
    public Dialog() {
        this.setVisible(true);
        this.setSize(200, 100);
        this.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
        Container container = this.getContentPane();
        container.setLayout(null);
        container.add(new Label("我来了"));

    }
}

标签

label
package GUI;

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

public class IconDemo extends JFrame implements Icon {
    private int width;
    private int height;
    public IconDemo(int width, int height) {
        this.width = width;
        this.height = height;
    }

    public void init() {
        IconDemo iconDemo = new IconDemo(15, 15);
        //图标放在标签上,也能放在按钮上
        JLabel label = new JLabel("icontest", JLabel.CENTER);
        Container container = getContentPane();
        container.add(label);
        this.setVisible(true);
        this.setDefaultCloseOperation(EXIT_ON_CLOSE);



    }

    public static void main(String[] args) {
        new IconDemo(15, 15).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;
    }

    
}

面板

package GUI;

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

public class JPanelDemo extends JFrame {
    public JPanelDemo() {
        Container container = this.getContentPane();//获取面板容器,专门放置JPanel面板
        container.setLayout(new GridLayout(2, 1,10, 10));//后面的参数是间距
        JPanel panel1 = new JPanel(new GridLayout(1, 3));
        JPanel panel2 = new JPanel(new GridLayout(1, 2));
        JPanel panel3 = new JPanel(new GridLayout(2, 2));
        JPanel panel4 = new JPanel(new GridLayout(3, 2));

        panel1.add(new JButton("Button1"));
        panel1.add(new JButton("Button2"));
        panel1.add(new JButton("Button3"));
        panel2.add(new JButton("Button4"));
        panel2.add(new JButton("Button5"));
        panel3.add(new JButton("Button6"));
        panel3.add(new JButton("Button7"));
        panel3.add(new JButton("Button8"));
        panel3.add(new JButton("Button9"));
        panel4.add(new JButton("Button10"));
        panel4.add(new JButton("Button11"));
        panel4.add(new JButton("Button12"));
        panel4.add(new JButton("Button13"));
        panel4.add(new JButton("Button14"));
        panel4.add(new JButton("Button15"));
        panel4.add(new JButton("Button16"));
        container.add(panel2);
        container.add(panel3);
        container.add(panel1);
        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(滚动条面板)
package GUI;

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

public class JScrollDemo extends JFrame {
public JScrollDemo() {
Container container = this.getContentPane();
//文本哉
JTextArea textArea = new JTextArea(20, 50);
textArea.setText("JScrollDemo");
//Scroll面板
JScrollPane scrollPane = new JScrollPane(textArea);
container.add(scrollPane);

    this.setVisible(true);
    this.setBounds(100, 100, 450, 300);
    this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

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

}

图片按钮、单选框、多选框

package GUI;

import javax.swing.*;
import java.awt.*;
import java.net.URL;
//图片按钮
public class JButtonDemo01 extends JFrame {
    public JButtonDemo01() {
        Container container = this.getContentPane();
        //将图片变成一个图标
        URL resource = JButtonDemo01.class.getResource("OIP-C.jpg");
        ImageIcon imageIcon = new ImageIcon(resource);
        //把这个图标设置到按钮上
        JButton button = new JButton();
        button.setIcon(imageIcon);
        button.setToolTipText("Click Me");
        container.add(button);
        this.setVisible(true);
        this.setSize(300, 200);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    }
    public static void main(String[] args) {
        new JButtonDemo01();

    }
}
package GUI;

import javax.swing.*;
import java.awt.*;
import java.net.URL;
//单选按键
public class JButtonDemo01 extends JFrame {
    public JButtonDemo01() {
        Container container = this.getContentPane();
        //将图片变成一个图标
        URL resource = JButtonDemo01.class.getResource("OIP-C.jpg");
        ImageIcon imageIcon = new ImageIcon(resource);
       //单选框
        JRadioButton radioButton1 = new JRadioButton("单选框1");
        JRadioButton radioButton2 = new JRadioButton("单选框2");
        JRadioButton radioButton3 = new JRadioButton("单选框3");
        //由于单选框只能选中一个,所以需要将其放到一个按钮组中
        ButtonGroup buttonGroup = new ButtonGroup();
        buttonGroup.add(radioButton1);
        buttonGroup.add(radioButton2);
        buttonGroup.add(radioButton3);
        container.add(radioButton1, BorderLayout.NORTH);
        container.add(radioButton2, BorderLayout.SOUTH);
        container.add(radioButton3, BorderLayout.CENTER);
        this.setVisible(true);
        this.setSize(300, 200);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    }
    public static void main(String[] args) {
        new JButtonDemo01();

    }
}
package GUI;

import javax.swing.*;
import java.awt.*;
import java.net.URL;
//多选按键
public class JButtonDemo01 extends JFrame {
    public JButtonDemo01() {
        Container container = this.getContentPane();
        //将图片变成一个图标
        URL resource = JButtonDemo01.class.getResource("OIP-C.jpg");
        ImageIcon imageIcon = new ImageIcon(resource);
      //多选框
        JCheckBox checkBox = new JCheckBox("Checkbox01");
        JCheckBox checkBox1 = new JCheckBox("Checkbox02");
        JCheckBox checkBox2 = new JCheckBox("Checkbox03");
        container.add(checkBox, BorderLayout.NORTH);
        container.add(checkBox1, BorderLayout.CENTER);
        container.add(checkBox2, BorderLayout.SOUTH);
        this.setVisible(true);
        this.setSize(300, 200);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    }
    public static void main(String[] args) {
        new JButtonDemo01();

    }
}

下拉框,列表框

package GUI;

import javax.swing.;
import java.awt.
;
//下拉框

public class TestComboboxDemo01 extends JFrame {
    public TestComboboxDemo01() {
        Container container = this.getContentPane();
        JComboBox status = new JComboBox<>();
        status.addItem(null);
        status.addItem("正在上映");
        status.addItem("已下架");
        status.addItem("即将上映");
        
        container.add(status);


        this.setVisible(true);
        this.setSize(300, 200);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
    public static void main(String[] args) {
        new TestComboboxDemo01();
    }
}
package GUI;

import javax.swing.*;
import java.awt.*;
//列表框
public class TestComboboxDemo01 extends JFrame {
    public TestComboboxDemo01() {
        Container container = this.getContentPane();
       //生成列表的内容
        String[] items = {"Java", "Python", "C++", "C#", "JavaScript"};
        JList jList = new JList(items);
        container.add(jList);


        this.setVisible(true);
        this.setSize(300, 200);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
    public static void main(String[] args) {
        new TestComboboxDemo01();
    }
}

应用场景
下拉框: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

文本框

package GUI;

import javax.swing.;
import java.awt.
;
//文本框

public class TestComboboxDemo01 extends JFrame {
    public TestComboboxDemo01() {
        Container container = this.getContentPane();
        //container.setLayout(null);//绝对布局
        JTextField jTextFields = new JTextField("hello");
        container.add(jTextFields);

        this.setVisible(true);
        this.setSize(300, 200);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
    public static void main(String[] args) {
        new TestComboboxDemo01();
    }
}
package GUI;

import javax.swing.*;
import java.awt.*;
//密码框
public class TestComboboxDemo01 extends JFrame {
    public TestComboboxDemo01() {
        Container container = this.getContentPane();
        JPasswordField jPasswordField = new JPasswordField();
        jPasswordField.setEchoChar('*');
        container.add(jPasswordField);
        this.setVisible(true);
        this.setSize(300, 200);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
    public static void main(String[] args) {
        new TestComboboxDemo01();
    }
}

贪吃蛇

帧数,如果时间片足够小,就是动画,一秒30帧 60帧,连起来就是动画,拆开就是静态的图片

posted @ 2025-02-24 22:33  乘加法  阅读(33)  评论(0)    收藏  举报