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java图形界面写个小桌面，内置简单小软件
一、做个这样的效果，双击图标打开相应的应用
二、主界面类，使用JavaSwing的JDesktopPane类创建这个桌面
package com.swing; import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.Graphics2D; import java.awt.Rectangle; import java.awt.Toolkit; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.util.Timer; import java.util.TimerTask; import javax.imageio.ImageIO; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JDesktopPane; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.JLabel; import com.swing.plane.PanelGame; import com.swing.sunModel.SunModel; /** * 获取文件的图标 FileSystemView fileSystemView = FileSystemView.getFileSystemView(); ImageIcon icon = (ImageIcon) fileSystemView.getSystemIcon(file); BufferedImage i = new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB); i.getGraphics().drawImage(icon.getImage(), 0, 0, null); File out = new File("src/lib/hello.png"); try { ImageIO.write(i, "png", out); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } * @author may * */ public class Desktop extends JFrame { private static final long serialVersionUID = 3899092629742973479L; private JDesktopPane desktop = null;//定义桌面面板 private JLabel backgroundImage = null;//定义桌面背景 private MouseOption mouseOption = new MouseOption();//鼠标监听对象 public Desktop(String title) { super(title); Toolkit toolkit = Toolkit.getDefaultToolkit(); //得到系统屏幕的大小 Dimension dimension = toolkit.getScreenSize(); //设置布局管理为BorderLayout this.setLayout(new BorderLayout()); int width = (int)dimension.getWidth(); int height = (int)dimension.getHeight() - 100; this.setSize(width, height); desktop = new JDesktopPane(); backgroundImage = new JLabel(); //创建一个空的的图片 BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics2D g = image.createGraphics(); BufferedImage ad = null; try { //读取背景图 ad = ImageIO.read(this.getClass().getResource("/lib/rapeFlower.jpg")); } catch (IOException e) { e.printStackTrace(); } //将背景图按比例缩放重新画到之前创建的空图片 g.drawImage(ad, 0, 0, width, height, null); //转化为Icon类图片 ImageIcon img = new ImageIcon(image); backgroundImage.setIcon(img); //设置存放背景图的背景标签的位置和大小 backgroundImage.setBounds(new Rectangle(0, 0, width, height)); //创建按钮 JButton myCompute = new JButton(); myCompute.setIcon(new ImageIcon(this.getClass().getResource("/lib/computer.png"))); myCompute.setBounds(20, 20, 48, 48); //设置按钮为透明 myCompute.setContentAreaFilled(false); //除去边框 myCompute.setBorderPainted(false); //添加事件监听 myCompute.addMouseListener(mouseOption ); //设置它的文本标识 myCompute.setText("compute"); //添加到桌面，并且比设置它的层次，比背景图更高一个层次，否侧会被背景图遮住，看不见 desktop.add(myCompute, Integer.MIN_VALUE + 1); JButton myNotebook= new JButton(); myNotebook.setIcon(new ImageIcon(this.getClass().getResource("/lib/notebook.png"))); myNotebook.setBounds(20, 88, 48, 48); myNotebook.setContentAreaFilled(false); myNotebook.setBorderPainted(false); myNotebook.addMouseListener(mouseOption); myNotebook.setText("notebook"); desktop.add(myNotebook, Integer.MIN_VALUE + 1); JButton myPanel= new JButton(); myPanel.setIcon(new ImageIcon(this.getClass().getResource("/lib/paper_plane.png"))); myPanel.setBounds(20, 156, 48, 48); myPanel.setContentAreaFilled(false); myPanel.setBorderPainted(false); myPanel.addMouseListener(mouseOption); myPanel.setText("panel"); desktop.add(myPanel, Integer.MIN_VALUE + 1); JButton mySunModel = new JButton(); mySunModel.setIcon(new ImageIcon(this.getClass().getResource("/lib/earth.net.png"))); mySunModel.setBounds(20, 224, 48, 48); mySunModel.setContentAreaFilled(false); mySunModel.setBorderPainted(false); mySunModel.addMouseListener(mouseOption); mySunModel.setText("sunModel"); desktop.add(mySunModel, Integer.MIN_VALUE + 1); desktop.add(backgroundImage, new Integer(Integer.MIN_VALUE)); this.getContentPane().add(desktop, BorderLayout.CENTER); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setVisible(true); } private class MouseOption extends MouseAdapter { private int count; private Timer timer = new Timer(); private String str = null; private class MyTimerTask extends TimerTask { JButton button = null; public MyTimerTask(JButton button) { this.button = button; } @Override public void run() { //超过0.4s且点击了一次 if(count == 1) { count = 0; } //在0.4s内点击两次 if(count == 2) { //由于这里的字符串使用的是直接赋值的字面量方式，所以可以直接使用等号来判断是否相等 switch(str) { case "fileChooser" : JFileChooser fileChooser = new JFileChooser(); fileChooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES); fileChooser.showOpenDialog(Desktop.this); File file = fileChooser.getSelectedFile(); if(file != null) { System.out.println(file.getAbsolutePath()); } break; case "notebook" : //调用windows系统自带的notepad /*try { Runtime.getRuntime().exec("notepad"); } catch (IOException e) { e.printStackTrace(); }*/ //调用自个写的一个特简易的记事本程序 Notepad notepad = new Notepad(); desktop.add(notepad); notepad.toFront(); break; case "compute" : //打开windows的文件管理器 try { java.awt.Desktop.getDesktop().open(new File(System.getProperty("user.home"))); } catch (IOException e) { e.printStackTrace(); } break; case "panel" : //启动飞机大战游戏 new PanelGame(); break; case "sunModel" : //启动太阳系模型，虽然没啥用，用来装B new SunModel(); break; } button.setContentAreaFilled(false); count = 0; } } } /** * 添加鼠标点击事件 */ @Override public void mouseClicked(MouseEvent e) { JButton button = (JButton) e.getSource(); button.setContentAreaFilled(true); str = button.getText(); count ++;//用于记录点击次数 //定制双击事件，使用定时器，每次点击后，延时0.4 timer.schedule(new MyTimerTask(button), 400); } } public static void main(String[] args) { new Desktop("桌面"); } }
三、Notepad简易小程序
1、效果图
2、Notepad.java的代码
package com.swing; import java.awt.Desktop; import java.awt.Font; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.JInternalFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JOptionPane; import javax.swing.JScrollPane; import javax.swing.JTextArea; /** * 简易笔记本 * @author may * */ public class Notepad extends JInternalFrame { private static final long serialVersionUID = -6148113299360403243L; private JMenuBar menuBar = null;//菜单栏 private JTextArea textArea = null;//输入框 private JScrollPane scrollPane = null;//带滚动条的面板 private MyAction myAction = new MyAction();//事件对象 private String dir = null;//保存打开过或者保存过文件的文件夹 private String fileDir = null;//保存你打开文件的文件夹 private boolean ctrlClick = false;//用于检测当前，你是否按下了Ctrl键 private boolean sClick = false;//用于检测当前，你是否按下了s键 public Notepad() { super("notepad"); this.setSize(600, 500);//窗口的大小 menuBar = new JMenuBar();//创建菜单栏 JMenu menu1 = new JMenu("文件");//创建菜单 JMenuItem menuItem2 = new JMenuItem("打开");//创建菜单项 JMenuItem menuItem4 = new JMenuItem("保存");//创建菜单项 menuItem4.addActionListener(myAction);//绑定事件 menuItem2.addActionListener(myAction);//绑定事件 JMenuItem menuItem3 = new JMenuItem("打开文件所在目录"); menuItem3.addActionListener(myAction); menu1.add(menuItem2); menu1.add(menuItem3); menu1.add(menuItem4); JMenu menu2 = new JMenu("版本信息"); menu2.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { //定义弹窗后的按钮的文字 String[] options = {"确定"}; //创建一个弹窗 JOptionPane.showOptionDialog(Notepad.this, "version:0.1-snapshoot", "关于", JOptionPane.OK_OPTION, JOptionPane.INFORMATION_MESSAGE, null, options, "确定"); } }); menuBar.add(menu1); menuBar.add(menu2); this.setJMenuBar(menuBar); textArea = new JTextArea(); //添加键盘检测事件 textArea.addKeyListener(new keyOption()); // this.getContentPane().add(menuBar, BorderLayout.NORTH); //设置字体 textArea.setFont(new Font("微软雅黑", Font.PLAIN, 18)); scrollPane = new JScrollPane(textArea); //当文本水平溢出时出现滚动条 scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED); //当文本垂直溢出时出现滚动条 scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED); this.getContentPane().add(scrollPane); //居中显示 //this.setLocationRelativeTo(null); //最小化 this.setIconifiable(true); //可关闭 this.setClosable(true); //可改变大小 this.setResizable(true); //销毁窗口 this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); this.setVisible(true); } /** * 打开文件选择和保存对话框 * @param flag */ public void openChooseDialog(String flag) { BufferedReader reader = null; JFileChooser fileChooser = new JFileChooser(); if(dir != null) { //定位上次打开和保存过文件的位置 fileChooser.setCurrentDirectory(new File(dir)); } switch(flag) { case "打开" : //指定它的父窗口 fileChooser.showOpenDialog(Notepad.this); //定义文件选择模式 fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY); File file = fileChooser.getSelectedFile(); if(file != null) { try { //得到选择文件的路径 dir = file.getAbsolutePath(); fileDir = dir; dir = dir.substring(0, dir.lastIndexOf("\\") + 1); reader = new BufferedReader(new InputStreamReader(new FileInputStream(file), "utf-8")); String str = reader.readLine(); textArea.setText(""); //读取文件内容 while(str != null) { textArea.append(str + "\n"); str = reader.readLine(); } } catch (Exception ex) { ex.printStackTrace(); } finally { if(reader != null) { try { reader.close(); } catch (IOException e) { e.printStackTrace(); } } } } break; case "保存" : //打开保存文件的对话框 fileChooser.showSaveDialog(Notepad.this); //得到保存文件后的文件对象 File saveFile = fileChooser.getSelectedFile(); if(saveFile != null) { //得到保存文件的路径 String absolutePath = saveFile.getAbsolutePath(); fileDir = absolutePath; FileOutputStream out = null; BufferedWriter buffOut = null; dir = absolutePath.substring(0, absolutePath.lastIndexOf("\\") + 1); //保存文件 try { out = new FileOutputStream(absolutePath); buffOut = new BufferedWriter(new OutputStreamWriter(out)); String text = textArea.getText(); if(text != null) { buffOut.write(text); } buffOut.flush(); } catch (Exception e) { e.printStackTrace(); } finally { try { if(out != null) { out.close(); } if(buffOut != null) { buffOut.close(); } } catch (IOException e1) { e1.printStackTrace(); } } } break; case "打开文件所在目录": if(dir != null) { try { //打开文件目录 Desktop.getDesktop().open(new File(dir)); } catch (IOException e) { e.printStackTrace(); } } break; } } /** * 事件监听类 * @author may * */ private class MyAction implements ActionListener { @Override public void actionPerformed(ActionEvent e) { JMenuItem item = (JMenuItem) e.getSource(); String flag = item.getText(); switch (flag) { case "打开": openChooseDialog(flag); break; case "保存": openChooseDialog(flag); break; case "打开文件所在目录": openChooseDialog(flag); break; } } } /** * 键盘监听内部类 * @author may * */ private class keyOption extends KeyAdapter { @Override public void keyPressed(KeyEvent e) { int keyCode = e.getKeyCode(); if(17 == keyCode) { ctrlClick = true; } else if(83 == keyCode) { sClick = true; } //判断Ctrl与s键是否按下，按下就开始保存 if(ctrlClick && sClick) { FileOutputStream out = null; BufferedWriter buffOut = null; try { if(fileDir != null) { out = new FileOutputStream(fileDir); buffOut = new BufferedWriter(new OutputStreamWriter(out)); String text = textArea.getText(); if(text != null) { buffOut.write(text); } buffOut.flush(); } else { openChooseDialog("保存"); } } catch (Exception ex) { ex.printStackTrace(); } finally { try { if(out != null) { out.close(); } if(buffOut != null) { buffOut.close(); } } catch (IOException e1) { e1.printStackTrace(); } } } } @Override public void keyReleased(KeyEvent e) { int keyCode = e.getKeyCode(); if(17 == keyCode) { ctrlClick = false; } else if(83 == keyCode) { sClick = false; } } } }
四、飞机大战简易小游戏
1、效果图
2、代码
（1）主类PanelGame.java
package com.swing.plane; import java.awt.Color; import java.awt.Font; import java.awt.Frame; import java.awt.Graphics; import java.awt.Image; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.awt.image.BufferedImage; import java.util.ArrayList; import java.util.List; import java.util.Random; import com.swing.util.ImageLoadUtil; /** * 主类 * @author may * */ public class PanelGame extends Frame { private static final long serialVersionUID = 6719627071124599012L; //我方飞机场 private List<Panel> Goodpanels = new ArrayList<Panel>(); //敌军飞机场 private List<Panel> panels = new ArrayList<Panel>(); //公共的子弹工厂 private List<Shell> shells = new ArrayList<Shell>(); //随机 private Random random = new Random(); //战场背景 private static Image image = ImageLoadUtil.loadImage("/lib/bg.jpg"); //缓冲图 private BufferedImage buffImage = new BufferedImage(500, 500, BufferedImage.TYPE_INT_RGB); //爆炸 private List<Explode> explodes = new ArrayList<Explode>(); //杀敌数 public int killEnemyCount = 0; //死亡次数 public int deadCount = 0; public PanelGame() { this.setSize(500,500); this.setLocation(300, 100); this.addWindowListener(new WindowAdapter() { @Override public void windowClosing(WindowEvent e) { PanelGame.this.dispose(); } }); //在显示（画窗口前new出来，否则会报空指针异常） //panel = new Panel(100,100, false); this.addKeyListener(new keyCtrl()); this.createGoodPanels(1); this.setVisible(true); new Thread(new MyThread()).start(); } public void createPanels(int num) { for(int i = 0; i < num; i++) { panels.add(new Panel(this, true)); } } public void createGoodPanels(int num) { if(Goodpanels.size() <= 0) { for(int i = 0; i < num; i++) { Goodpanels.add(new Panel(452, 250, false, this)); } } } public List<Explode> getExplodes() { return explodes; } public List<Shell> getShells() { return shells; } public List<Panel> getPanels() { return panels; } public List<Panel> getGoodpanels() { return Goodpanels; } @Override public void paint(Graphics g) { g.drawImage(buffImage, 0, 0, null); } @Override public void update(Graphics g) { Graphics warG = buffImage.getGraphics(); warG.fillRect(0, 0, 500, 500); warG.drawImage(image, 0, 0, 500, 500, null); Color c = warG.getColor(); warG.setColor(Color.gray); warG.setFont(new Font("微软雅黑", Font.PLAIN, 18)); warG.drawString("击毁敌机：" + killEnemyCount, 10, 50); warG.drawString("死亡次数：" + deadCount, 10, 80); for(int i = 0; i < Goodpanels.size(); i++) { Goodpanels.get(i).draw(warG); warG.drawString("生命值：" + Goodpanels.get(i).lifeValue, 10, (i+1)*30 + 80); } warG.setColor(c); for(int i = 0; i < panels.size(); i++) { panels.get(i).draw(warG); } for(int i = 0; i < shells.size(); i++) { shells.get(i).draw(warG); } for(int i = 0; i < explodes.size(); i++) { explodes.get(i).draw(warG); } paint(g); warG.setColor(c); if(this.getPanels().size() < 3) { this.createPanels(random.nextInt(6) + 1); } } public List<Panel> getPanel() { return Goodpanels; } public static void main(String[] args) { new PanelGame(); } private class keyCtrl extends KeyAdapter { @Override public void keyPressed(KeyEvent e) { int keyCode = e.getKeyCode(); if(keyCode == KeyEvent.VK_F1) { createGoodPanels(1); } for(int i = 0; i < Goodpanels.size(); i++) { Goodpanels.get(i).keyPressed(e); } } @Override public void keyReleased(KeyEvent e) { for(int i = 0; i < Goodpanels.size(); i++) { Goodpanels.get(i).keyReleased(e); } } } private class MyThread implements Runnable { @Override public void run() { while(true) { repaint(); try { Thread.sleep(10); } catch (InterruptedException e) { e.printStackTrace(); } } } } }
(2)Panel.java
package com.swing.plane; import java.awt.Color; import java.awt.Graphics; import java.awt.Image; import java.awt.Rectangle; import java.awt.event.KeyEvent; import java.util.List; import java.util.Random; import com.swing.util.ImageLoadUtil; /** * 飞机类 * @author may * */ public class Panel { private int x;//位置 private int y;//位置 private static final int WIDTH = 48;//飞机的大小 private static final int HEIGHT = 48;//飞机的大小 private static final int WAR_WIDTH = 500;//游戏窗口的大小 private static final int WAR_HEIGHT = 500;//游戏窗口的大小 private boolean up = false, right = false, down = false, left = false;//飞机的移动方向 private boolean enemy = true;//默认为敌机 private static Image[] images = new Image[2];//敌机与我方的飞机图片 private List<Shell> shells = null;//子弹容器 private int step = 1;//移动的步数 private boolean isLive = true;//默认飞机生存 private int oldX = x;//记录飞机上一次的位置 private int oldY = y;//记录飞机上一次的位置 private int keep = 0;//敌机自动发射子弹的间隔 private Random random = new Random();//定义随机数，用于定义敌机的子弹发射的时间间隔 private Director dir = Director.STOP;//飞机默认是不动的 private PanelGame game;//游戏主类 public int lifeValue = http://www.mamicode.com/90;//飞机的生命值 static { for(int i = 0; i < images.length; i++) { images[i] = ImageLoadUtil.loadImage("/lib/plane" + (i + 1) + ".png"); images[i].getWidth(null); } } public Panel(PanelGame game, boolean enemy) { this.game = game; this.enemy = enemy; //如果是敌机，定义它初始位置 if(this.enemy) { this.x = - random.nextInt(3 * WIDTH) ; this.y = random.nextInt(WAR_HEIGHT - 2 * HEIGHT) + HEIGHT; } this.shells = game.getShells(); } public Panel(int x, int y, boolean enemy, PanelGame game) { this.x = x; this.y = y; this.enemy = enemy; this.game = game; this.shells = game.getShells(); } public void draw(Graphics g) { //如果飞机还活着，就画它 if(this.isLive) { Color c = g.getColor(); if(enemy) { g.drawImage(images[1], x, y, WIDTH, HEIGHT, null); } else { g.drawImage(images[0], x, y, WIDTH, HEIGHT, null); } g.setColor(c); g.setColor(c); this.move(); if(enemy) { this.hit(game); } } } /** * 创建子弹 */ public void createShells() { if(!enemy) { this.getShells().add(new Shell(x - 10, y + 20, this, false, game)); } else { this.getShells().add(new Shell(x + 50, y + 20, this, true, game)); } } public boolean isEnemy() { return enemy; } public int getX() { return x; } public List<Shell> getShells() { //shells = game.getShells(); return shells; } //如果飞机被击毁，飞机在飞机战场上消失（主类的容器） public void removedeadPlane() { this.isLive = false; if(!this.isLive && this.enemy) { game.getPanels().remove(this); } if(!this.isLive && !this.enemy) { game.getPanel().remove(this); } } public boolean isLive() { return isLive; } public void setLive(boolean isLive) { this.isLive = isLive; } public int getY() { return y; } //确定方向，这些方向的确定是通过按键监听来确定 private void directer() { if( left && !down && !right && !up ) { dir = Director.L; } else if( left && up && !right && !down ) { dir = Director.LU; } else if( up && !left && !right && !down ) { dir = Director.U; } else if( up && right && !left && !down ) { dir = Director.RU; } else if( right && !up && !left && !down ) { dir = Director.R; } else if( right && down && !up && !left ) { dir = Director.RD; } else if( down && !up && !right && !left ) { dir = Director.D; } else if( left && down && !right && !up ) { dir = Director.LD; } else if( !left && !up && !right && !down ) { dir = Director.STOP; } } //根据方向的移动方法 public void move() { oldX = x; oldY = y; switch(dir) { case L: x -= step; break; case LU: x -= step; y -= step; break; case U: y -= step; break; case RU: x += step; y -= step; break; case R: x += step; break; case RD: x += step; y += step; break; case D: y += step; break; case LD: x -= step; y += step; break; case STOP: break; } //如果不是敌机，不允许它跑出战场 if(!enemy) { if(x > (WAR_WIDTH - 48) || x < 0) { x = oldX; } if(y > (WAR_HEIGHT - 48) || y < 30) { y = oldY; } } //如果是敌机，确定它的方向 if(enemy) { dir = Director.R; //每隔50个刷新周期，发射一枚子弹 if(keep == 0) { keep = 50; this.createShells(); } keep --; //如果敌机逃出战场，摧毁它 if(x > WAR_WIDTH) { game.getPanels().remove(this); } } } //键盘按下监听事件，由主类调用 public void keyPressed(KeyEvent e) { int keyCode = e.getKeyCode(); switch(keyCode) { case KeyEvent.VK_UP : this.up = true; break; case KeyEvent.VK_RIGHT : this.right = true; break; case KeyEvent.VK_DOWN : this.down = true; break; case KeyEvent.VK_LEFT : this.left = true; break; } this.directer(); } //键盘抬起监听事件，由主类调用 public void keyReleased(KeyEvent e) { int keyCode = e.getKeyCode(); switch(keyCode) { case KeyEvent.VK_UP : this.up = false; break; case KeyEvent.VK_RIGHT : this.right = false; break; case KeyEvent.VK_DOWN : this.down = false; break; case KeyEvent.VK_LEFT : this.left = false; break; case KeyEvent.VK_CONTROL : this.createShells(); break; } this.directer(); } //矩形碰撞检测 public Rectangle getRectangle() { return new Rectangle(this.x, this.y, WIDTH, HEIGHT); } //撞到了就爆炸 public void createExplode() { game.getExplodes().add(new Explode(this.x, this.y, game)); } public void hit(PanelGame game) { if(this.enemy) { List<Panel> p = game.getGoodpanels(); for(int i = 0; i < p.size(); i++) { if(this.getRectangle().intersects(p.get(i).getRectangle())) { game.getPanels().remove(this); p.get(i).lifeValue -= 30; if(p.get(i).lifeValue <= 0) { game.getGoodpanels().remove(p.get(i)); } this.createExplode(); } } } } }
(3)、Shell.java炮弹类
package com.swing.plane; import java.awt.Color; import java.awt.Graphics; import java.awt.Rectangle; import java.util.List; /** * 炮弹类 * @author may * */ public class Shell { private int x; private int y; private static final int WIDTH = 10; private static final int HEIGHT = 10; private boolean enemy = false; private boolean isLive = true; private Panel panel; private PanelGame game; private int step =2; public Shell(int x, int y, Panel panel, boolean enemy, PanelGame game) { this.x = x; this.y = y; this.panel = panel; this.enemy = enemy; this.game = game; } public void draw(Graphics g) { if(this.isLive) { Color c = g.getColor(); if(enemy) { g.setColor(Color.red); } else { g.setColor(Color.yellow); } g.fillOval(this.x, this.y, WIDTH, HEIGHT); g.setColor(c); move(); this.hit(game); } } public Rectangle getRectangle() { Rectangle rectangle = new Rectangle(x, y, WIDTH, HEIGHT); return rectangle; } public boolean isLive() { return isLive; } public void setLive(boolean isLive) { this.isLive = isLive; } public void move() { if(!enemy) { x -= step; } else { x += step; } if(x < 10 || x > 500) { this.setLive(false); panel.getShells().remove(this); } } public void setX(int x) { this.x = x; } public void setY(int y) { this.y = y; } //撞到了就爆炸 public void createExplode() { game.getExplodes().add(new Explode(this.x, this.y, game)); } //碰撞检测方法 public void hit(PanelGame game) { List<Panel> enemys = game.getPanels(); List<Panel> goods = game.getPanel(); for(int i = 0; i < enemys.size(); i++) { if(this.enemy != enemys.get(i).isEnemy()) { if(this.getRectangle().intersects(enemys.get(i).getRectangle())) { this.setLive(false); panel.getShells().remove(this); enemys.get(i).removedeadPlane(); this.createExplode(); game.killEnemyCount ++; } } } for(int i = 0; i < goods.size(); i++) { if(this.enemy != goods.get(i).isEnemy()) { if(this.getRectangle().intersects(goods.get(i).getRectangle())) { this.setLive(false); panel.getShells().remove(this); goods.get(i).lifeValue -= 30; if(goods.get(i).lifeValue <= 0) { game.deadCount ++; goods.get(i).removedeadPlane(); } this.createExplode(); } } } } }
（4）爆炸类Explode.java
package com.swing.plane; import java.awt.Color; import java.awt.Graphics; import java.awt.Image; import com.swing.util.ImageLoadUtil; /** * 爆炸类 * @author may * */ public class Explode { private int x;//爆炸位置 private int y;//爆炸位置 private static Image[] images = new Image[10]; private int count = 0;//当前播放到的图片在数组中的下标 private PanelGame game;//持有主窗口的引用 //静态加载图片 static { for(int i = 0; i < images.length; i++) { images[i] = ImageLoadUtil.loadImage("/lib/explode/" + (i) + ".gif"); //避免Java的懒加载，让它一用到就可直接用，否则可能一开始的一两张图将看不到 images[i].getHeight(null); } } /** * * @param x 位置 * @param y 位置 * @param game 游戏主类 */ public Explode(int x, int y, PanelGame game) { this.x = x; this.y = y; this.game = game; } public void draw(Graphics g) { Color c = g.getColor(); if(count == 3) { //播放完后将自己从主类容器中去掉 game.getExplodes().remove(this); } g.drawImage(images[count ++], this.x - images[count ++].getWidth(null)/2 , this.y - images[count ++].getHeight(null)/2, 30, 30, null); g.setColor(c); } }
（5）方向枚举常量
package com.swing.plane; /** * 定义飞机运动的方向 * @author may * */ public enum Director { U, RU, R, RD, D , LD, L, LU, STOP; }
（6）图片加载辅助类
package com.swing.util; import java.awt.Image; import java.awt.image.BufferedImage; import java.io.IOException; import javax.imageio.ImageIO; public class ImageLoadUtil { private ImageLoadUtil() {} public static Image loadImage(String path) { BufferedImage image = null; try { image = ImageIO.read(ImageLoadUtil.class.getResource(path)); } catch (IOException e) { e.printStackTrace(); } return image; } }
五、太阳系模型
1、效果
2、代码
（1）定义图形大小的一些常量类
package com.swing.sunModel; /** * 常量类 * @author may * */ public class Constant { public static final int GAME_WIDTH = 800; public static final int GAME_HEIGHT = 600; public static final int FIXED_WIDTH = 40; public static final int FIXED_HEIGHT = 35; }
（2）Star.java接口类
package com.swing.sunModel; import java.awt.Graphics; /** * 行星的抽象类 * @author may * */ public interface Star { public int getX(); public int getY(); public int getWidth(); public int getHeight(); public void draw(Graphics g); }
（3）FixedStar.java恒星类
package com.swing.sunModel; import java.awt.Color; import java.awt.Graphics; import java.awt.Image; import java.util.ArrayList; import java.util.List; public class FixedStar implements Star { private int x;//x轴位置 private int y;//y轴位置 private int fixed_width;//物体的宽度 private int fixed_height;//物体的高度 private List<Star> planets = new ArrayList<Star>();//用于存储行星的容器 private static Image image = ImageLoadUtil.loadImage("/lib/Sun.png");////恒星的图片 public FixedStar(int fixed_width, int fixed_height) { //计算出xy的值，是它居中显示 this.x = (Constant.GAME_WIDTH - fixed_width)/2; this.y = (Constant.GAME_HEIGHT - fixed_height)/2; this.fixed_width = fixed_width; this.fixed_height = fixed_height; this.createPlanet(); } /** * 创建围绕它转的所有行星 */ private void createPlanet() { Star earth= new Planet(100, 50, 30, 30, this, "/lib/earth.net.png", 0.09); planets.add(earth); planets.add(new Planet(20, 15, 15, 15, earth, "/lib/venus.png", 0.3, true)); planets.add(new Planet(200, 100, 30, 30, this, "/lib/goog_mars.png", 0.08)); planets.add(new Planet(250, 150, 30, 30, this, "/lib/uranus.png", 0.05)); planets.add(new Planet(350, 200, 30, 30, this, "/lib/venus.png", 0.03)); } /** * 绘画方法 * @param g */ public void draw(Graphics g) { Color c = g.getColor(); g.setColor(Color.red); //g.fillOval(this.x, this.y, fixed_width, fixed_height); g.drawImage(image, this.x, this.y, fixed_width, fixed_height, null); g.setColor(c); //画出每个行星 for(int i = 0; i < this.planets.size(); i++) { planets.get(i).draw(g); } } public int getX() { return x; } public void setX(int x) { this.x = x; } public int getY() { return y; } public void setY(int y) { this.y = y; } public void setFixed_width(int fixed_width) { this.fixed_width = fixed_width; } public void setFixed_height(int fixed_height) { this.fixed_height = fixed_height; } @Override public int getWidth() { return fixed_height; } @Override public int getHeight() { return fixed_height; } }
（4）父窗口类MyFrame.java
package com.swing.sunModel; import java.awt.Frame; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; /** * 定义一个父类，将常用的代码写到此处 * @author may * */ public class MyFrame extends Frame { private static final long serialVersionUID = 8133309356114432110L; public MyFrame() { this.setSize(Constant.GAME_WIDTH, Constant.GAME_HEIGHT); this.setLocationRelativeTo(null); this.addWindowListener(new WindowAdapter() { @Override public void windowClosing(WindowEvent e) { MyFrame.this.dispose(); } }); this.setVisible(true); } }
（5）飞机类Planet.java
package com.swing.sunModel; import java.awt.Color; import java.awt.Graphics; import java.awt.Image; import java.util.ArrayList; import java.util.List; public class Planet implements Star { private int x;//行星的位置 private int y;//行星的位置 private int planet_width;//行星的大小 private int planet_height;//行星的大小 private int longXpis; //离恒星的距离，就是椭圆的长轴 private int shortXpis;//离恒星的距离，就是椭圆的短轴 private Star fixedStar;//恒星 private double degree = 1;//角度 private Image image = null;//行星的图片，由于每个行星不同，所以定义为非静态的 private double speed = 0.01;//默认的改变角度的速度 private List<Planet> moon = new ArrayList<Planet>();//定义行星的子行星，如地球的月亮 private boolean satellite = false; public Planet(int x, int y) { this.x = x; this.y = y; } /** * * @param longXpis 长轴 * @param shortXpis 短轴 * @param planet_width 行星的宽度 * @param planet_height 行星的高度 * @param fixedStar 中心星体，即恒星 * @param path 图片的位置 * @param speed 角度改变的速度 */ public Planet(int longXpis, int shortXpis, int planet_width, int planet_height, Star fixedStar, String path, double speed) { //定义离中心星体的初始距离 this(fixedStar.getX() + fixedStar.getWidth() / 2 + longXpis - planet_width / 2, fixedStar.getY() + fixedStar.getHeight() / 2 - planet_height / 2); this.longXpis = longXpis; this.shortXpis = shortXpis; this.planet_height = planet_height; this.planet_width = planet_width; this.fixedStar = fixedStar; this.image = ImageLoadUtil.loadImage(path); this.speed = speed; } public Planet(int longXpis, int shortXpis, int planet_width, int planet_height, Star planetStar, String path, double speed, boolean satellite) { this(longXpis, shortXpis, planet_width, planet_height, planetStar, path, speed); this.satellite = satellite; } /** * 绘画方法 * @param g */ public void draw(Graphics g) { Color c = g.getColor(); g.setColor(Color.gray); //画出行星图片 g.drawImage(image, this.x, this.y, planet_width, planet_height, null); //画出行星的运行轨迹 if(!satellite) { g.drawOval(fixedStar.getX() - (longXpis - this.planet_width / 2), fixedStar.getY() - (shortXpis - this.planet_height / 2), this.longXpis * 2, this.shortXpis * 2); } g.setColor(c); //以下的代码使行星做椭圆运动 this.x = (int) (fixedStar.getX() + longXpis * Math.cos(degree)); this.y = (int) (fixedStar.getY() + shortXpis * Math.sin(degree)); if(degree < 2 * Math.PI) { degree += speed; } else { degree = 0; } //画子行星 for(int i = 0; i < moon.size(); i++) { moon.get(i).draw(g); } } public int getX() { return x; } public int getY() { return y; } @Override public int getWidth() { return planet_width; } @Override public int getHeight() { return planet_height; } }
(6)主类sunMode.java
package com.swing.sunModel; import java.awt.Graphics; import java.awt.Image; import java.awt.image.BufferedImage; public class SunModel extends MyFrame { private static final long serialVersionUID = -5330545593499050676L; private static Image image = ImageLoadUtil.loadImage("/lib/star.jpg"); //恒星对象 private FixedStar fixedStar = new FixedStar(Constant.FIXED_WIDTH, Constant.FIXED_HEIGHT); //创建一个缓冲图，用于双缓冲，避免闪烁出现 private BufferedImage buffImage = new BufferedImage(Constant.GAME_WIDTH, Constant.GAME_HEIGHT, BufferedImage.TYPE_INT_RGB); public SunModel() { super(); this.setResizable(false); new Thread(new MyThread()).start(); } @Override public void paint(Graphics g) { //将缓冲图直接画上去 g.drawImage(buffImage, 0, 0, null); } //重写update方法，进行双缓冲，将需要显示的物体全画到缓冲图上，然后一次性显示出来 @Override public void update(Graphics g) { Graphics sunG = buffImage.getGraphics(); //将背景图画上 sunG.drawImage(image, 0, 0, null); fixedStar.draw(sunG); paint(g); } public static void main(String[] args) { new SunModel(); } private class MyThread implements Runnable { @Override public void run() { while(true) { //调用重画方法 repaint(); try { Thread.sleep(30); } catch (InterruptedException e) { e.printStackTrace(); } } } } }
(7)图片加载辅助类ImageLoadUtil.java
package com.swing.sunModel; import java.awt.Image; import java.awt.image.BufferedImage; import java.io.IOException; import javax.imageio.ImageIO; public class ImageLoadUtil { private ImageLoadUtil() {} public static Image loadImage(String path) { BufferedImage image = null; try { image = ImageIO.read(ImageLoadUtil.class.getResource(path)); } catch (IOException e) { e.printStackTrace(); } return image; } }
图片放在src下的lib文件夹下
java图形界面写个小桌面，内置简单小软件
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