AWT
窗口监听
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); this.addWindowListener( //匿名内部类 new WindowAdapter() { @Override public void windowOpened(WindowEvent e) { super.windowOpened(e); } //关闭窗口 @Override public void windowClosing(WindowEvent e) { System.out.println("windowClosing"); System.exit(0); } //激活窗口 @Override public void windowActivated(WindowEvent e) { WindowFrame source = (WindowFrame) e.getSource(); source.setTitle("被激活了"); System.out.println("windowActivated"); } } ); } /*class MyWindowListener extends WindowAdapter{ @Override public void windowClosing(WindowEvent e) { setVisible(false);//隐藏窗口,通过按钮,隐藏当前窗口 System.exit(0);//正常退出 } }*/ }
键盘监听
import java.awt.*; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; //键 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() { //匿名内部类 //键盘按下 @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();//不需要去记录这个数值,直接使用静态属性 VK_XXX System.out.println(keyCode); if (keyCode == KeyEvent.VK_UP){ System.out.println("你按下了上键"); } //根据按下键的不同操作,产生不同结果 } }); } }
Swing
窗口、面板
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JFrame窗口"); frame.setVisible(true); frame.setBounds(100,100,200,200); frame.setBackground(Color.blue); //设置文字Jlabel JLabel label = new JLabel("欢迎来到Java学习系列节目"); frame.add(label); //让文本居中,设置水平对齐 label.setHorizontalAlignment(SwingConstants.CENTER); //容器实例化 Container container = frame.getContentPane(); container.setBackground(Color.BLUE); //关闭事件 frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); } public static void main(String[] args) { //建立一个窗口 new JFrameDemo().init(); } }
弹窗
JDialog,用来被弹出,默认就有关闭事件!
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); //JFrame 放东西,容器 Container container = this.getContentPane(); container.setLayout(null); //按钮 JButton button = new JButton("点击弹出一个对话框");//创建 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")); } }
标签
label
new JLabel("xxx");
图标 ICON
import javax.swing.*; import java.awt.*; //图标,需要实现类,Frame需要继承 public class IconDemo extends JFrame implements Icon { private int width; private int height; public IconDemo(){}//无参构造 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 ImageIcon
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("receive.jpg"); ImageIcon imageIcon = new ImageIcon(url); label.setIcon(imageIcon); label.setHorizontalAlignment(SwingConstants.CENTER); Container container = this.getContentPane(); container.add(label); setVisible(true); setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); setBounds(100,100,400,400); } public static void main(String[] args) { new ImageIconDemo(); } }
面板
JPanel
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));//后面的参数的意思,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, 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("3")); panel3.add(new JButton("3")); panel4.add(new JButton("4")); panel4.add(new JButton("4")); panel4.add(new JButton("4")); panel4.add(new JButton("4")); panel4.add(new JButton("4")); panel4.add(new JButton("4")); 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 滚动条
import javax.swing.*; import java.awt.*; public class JScrollDemo extends JFrame { public JScrollDemo(){ Container container = this.getContentPane(); //文本域 JTextArea jTextArea = new JTextArea(20, 50); jTextArea.setText("欢迎学习Java"); JScrollPane scrollPane = new JScrollPane(jTextArea); container.add(scrollPane); this.setVisible(true); this.setBounds(100,100,300,350); this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); } public static void main(String[] args) { new JScrollDemo(); } }
按钮
图片按钮
import javax.swing.*; import java.awt.*; import java.net.URL; public class JButton01 extends JFrame { public JButton01(){ Container container = this.getContentPane(); //将一个图片变为图标 URL resource = JButton01.class.getResource("receive.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); } public static void main(String[] args) { new JButton01(); } }
单选按钮
import javax.swing.*; import java.awt.*; public class JButtonDemo02 extends JFrame { public JButtonDemo02(){ Container container = this.getContentPane(); //单选框 JRadioButton radioButton1 = new JRadioButton("JRadioButton01"); JRadioButton radioButton2 = new JRadioButton("JRadioButton02"); JRadioButton radioButton3 = 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(radioButton1); group.add(radioButton2); group.add(radioButton3); container.add(radioButton1,BorderLayout.CENTER); container.add(radioButton2,BorderLayout.NORTH); container.add(radioButton3,BorderLayout.SOUTH); this.setVisible(true); this.setSize(500,300); this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); } public static void main(String[] args) { new JButtonDemo02(); } }
多选按钮
import javax.swing.*; import java.awt.*; public class JButtonDemo03 extends JFrame { public JButtonDemo03(){ Container container = this.getContentPane(); //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(); } }
下拉框
import javax.swing.*; import java.awt.*; 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(500,350); this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); } public static void main(String[] args) { new TestComboboxDemo01(); } }
列表框
import javax.swing.*; import java.awt.*; import java.util.Vector; public class TestComboboxDemo02 extends JFrame{ public TestComboboxDemo02(){ Container container = this.getContentPane(); //生成列表的内容 //String[] contents = {"1","2","3"}; Vector contents = new Vector(); //列表中需要放入内容 JList jList = new JList(contents); contents.add("zhangsan"); contents.add("lisi"); contents.add("wangwu"); container.add(jList); this.setVisible(true); this.setSize(500,350); this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); } public static void main(String[] args) { new TestComboboxDemo02(); } }
- 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!
文本框
- 文本框
import javax.swing.*; import java.awt.*; public class TestTextDemo01 extends JFrame { public TestTextDemo01(){ Container container = this.getContentPane(); JTextField textField = new JTextField("hello"); JTextField textField2 = new JTextField("world",20); container.add(textField,BorderLayout.NORTH); container.add(textField2,BorderLayout.SOUTH); this.setVisible(true); this.setSize(500,350); this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); } public static void main(String[] args) { new TestTextDemo01(); } }
- 密码框
import javax.swing.*; import java.awt.*; public class TestTextDemo02 extends JFrame{ public TestTextDemo02(){ Container container = this.getContentPane(); //尽量使用面板操作 JPasswordField passwordField = new JPasswordField();//****** passwordField.setEchoChar('*'); container.add(passwordField); this.setVisible(true); this.setSize(500,350); this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); } public static void main(String[] args) { new TestTextDemo02(); } }
- 文本域
import javax.swing.*; import java.awt.*; public class JScrollDemo extends JFrame { public JScrollDemo(){ Container container = this.getContentPane(); //文本域 JTextArea jTextArea = new JTextArea(20, 50); jTextArea.setText("欢迎学习Java"); JScrollPane scrollPane = new JScrollPane(jTextArea); container.add(scrollPane); this.setVisible(true); this.setBounds(100,100,300,350); this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); } public static void main(String[] args) { new JScrollDemo(); } }
贪吃蛇
- 定义数据
- 画上去
- 监听事件
- 键盘
- 事件
import javax.swing.*; 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.setVisible(true); frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); frame.add(new GamePanel()); //正常的游戏内容都在Panel上 } } ==================================================================================== 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; //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 25*25 int[] snakeY = new int[500];//蛇的Y坐标 25*25 String fx; //食物的坐标 int foodx; int foody; Random random = new Random(); int score;//成绩 //游戏当前的状态:开始,停止 boolean isStart = false;//默认是不开始! boolean isFail = false;//游戏失败状态 //定时器 以ms为单位 1000ms=1s Timer timer = new Timer(100,this);//100毫秒执行一次 //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();//游戏一开始定时器就启动 } //初始化方法 public void init(){ length = 3; snakeX[0] = 100;snakeY[0] = 100;//脑袋的坐标 snakeX[1] = 75;snakeY[1] = 100;//第一个身体的坐标 snakeX[2] = 50;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 //绘制静态的面板 this.setBackground(Color.white); Data.header.paintIcon(this,g,25,11);//头部广告栏 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.right.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向右,需要通过方向来判断 }else if (fx.equals("L")){ Data.left.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向右,需要通过方向来判断 }else if (fx.equals("U")){ Data.up.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向右,需要通过方向来判断 }else if (fx.equals("D")){ Data.down.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向右,需要通过方向来判断 } for (int i = 1; i < length; i++) { Data.body.paintIcon(this,g,snakeX[i],snakeY[i]);//第一个身体的坐标 } //游戏状态 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 (isFail){ g.setColor(Color.red); g.setFont(new Font("微软雅黑",Font.BOLD,40)); g.drawString("失败,按下空格重新开始",300,300); } } //键盘监听事件 @Override public void keyTyped(KeyEvent e) { } @Override public void keyPressed(KeyEvent e) { int keyCode = e.getKeyCode();//获得键盘按键是哪一个 if (keyCode == KeyEvent.VK_SPACE){//如果按下的是空格键 if (isFail){ //重新开始 isFail = false; init(); }else { 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"; } } //事件监听---需要通过固定事件来刷新 @Override public void actionPerformed(ActionEvent e) { if (isStart && isFail == false){//如果游戏是开始状态,就让小蛇动起来! //吃食物 if (snakeX[0] == foodx && snakeY[0] == foody){ length++;//长度 + 1 //分数加10 score = score + 10; //再次随机生成事物 foodx = 25 + 25*random.nextInt(34); foody = 75 + 25*random.nextInt(24); } //移动 for (int i = length-1; i > 0; i--) {//后一节移到前一节的位置 snakeX[1] snakeX[0]; 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;}//边界判断 }else if (fx.equals("L")){ snakeX[0] = snakeX[0]-25; if (snakeX[0]<0){snakeX[0] = 825;}//边界判断 }else if (fx.equals("U")){ snakeY[0] = snakeY[0]-25; if (snakeY[0]<75){snakeY[0] = 650;}//边界判断 }else if (fx.equals("D")) { snakeY[0] = snakeY[0] + 25; if (snakeY[0] > 650) {snakeY[0] = 75;}//边界判断 } //失败判断,撞到自己就算失败 for (int i = 1; i < length; i++){ if (snakeX[0]==snakeX[i] && snakeY[0]==snakeY[i]){ isFail = true; } } repaint();//重画页面 } timer.start();//定时器开启 } @Override public void keyReleased(KeyEvent e) { } } =================================================================================== import javax.swing.*; import java.net.URL; //数据中心 public class Data { //图片要放在src文件中 //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 bodyURL = Data.class.getResource("/statics/body.png"); public static ImageIcon body = new ImageIcon(bodyURL); public static URL foodURL = Data.class.getResource("/statics/food.png"); public static ImageIcon food = new ImageIcon(foodURL); }