course2 tank class

src/com/demo/tank/coruse1/Main.java

@@ -1,7 +1,7 @@
 package com.demo.tank.coruse1;
 
 public class Main {
-    public static void main(String[] args) throws InterruptedException {
+    public static void main(String[] args){
         TankFrame tf = new TankFrame();
     }
 }

src/com/demo/tank/coruse2/Direction.java

@@ -0,0 +1,5 @@
+package com.demo.tank.coruse2;
+
+public enum Direction {
+    LEFT, RIGHT, UP, DOWN;
+}

src/com/demo/tank/coruse2/MainV2.java

@@ -0,0 +1,10 @@
+package com.demo.tank.coruse2;
+
+import com.demo.tank.coruse1.TankFrame;
+
+public class MainV2 {
+    public static void main(String[] args){
+        TankFrame tf = new TankFrame();
+        tf.repaint();
+    }
+}

src/com/demo/tank/coruse2/Tank.java

@@ -0,0 +1,56 @@
+package com.demo.tank.coruse2;
+
+import java.awt.*;
+
+public class Tank {
+    private int x,y;
+    private Direction dir;
+    private static final int SPEED = 10;
+
+
+    public Tank(int x, int y, Direction dir) {
+        this.x = x;
+        this.y = y;
+        this.dir = dir;
+    }
+
+    public void paint(Graphics g) {
+        g.fillRect(x, y,50,50);
+        switch (dir){
+            case UP: y -= SPEED;
+                break;
+            case DOWN: y += SPEED;
+                break;
+            case LEFT: x -= SPEED;
+                break;
+            case RIGHT: x += SPEED;
+                break;
+            default:
+                break;
+        }
+    }
+
+    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 Direction getDir() {
+        return dir;
+    }
+
+    public void setDir(Direction dir) {
+        this.dir = dir;
+    }
+}

src/com/demo/tank/coruse2/TankFrame.java

@@ -0,0 +1,86 @@
+package com.demo.tank.coruse2;
+
+import java.awt.*;
+import java.awt.event.KeyAdapter;
+import java.awt.event.KeyEvent;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+
+public class TankFrame extends Frame {
+    Tank tank = new Tank(500, 500, Direction.UP);
+
+    public TankFrame(){
+        setVisible(true);
+        setSize(800, 600);
+        setResizable(false);
+        setTitle("tank war");
+        this.addKeyListener(new MyKeyListener());
+        this.addWindowListener(new WindowAdapter() {
+            @Override
+            public void windowClosing(WindowEvent e) {
+                System.exit(0);
+            }
+        });
+    }
+
+    @Override
+    public void paint(Graphics g){
+        tank.paint(g);
+    }
+
+    class MyKeyListener extends KeyAdapter{
+        boolean bL = false;
+        boolean bR = false;
+        boolean bU = false;
+        boolean bD = false;
+
+        @Override
+        public void keyPressed(KeyEvent e) {
+            switch (e.getKeyCode()){
+                case KeyEvent.VK_A:
+                    bL = true;
+                    break;
+                case KeyEvent.VK_D:
+                    bR = true;
+                    break;
+                case KeyEvent.VK_W:
+                        bU = true;
+                        break;
+                case KeyEvent.VK_S:
+                    bD = true;
+                    break;
+                default:
+                    break;
+            }
+            setTankDirection();
+        }
+
+        @Override
+        public void keyReleased(KeyEvent e) {
+            switch (e.getKeyCode()){
+                case KeyEvent.VK_A:
+                    bL = false;
+                    break;
+                case KeyEvent.VK_D:
+                    bR = false;
+                    break;
+                case KeyEvent.VK_W:
+                    bU = false;
+                    break;
+                case KeyEvent.VK_S:
+                    bD = false;
+                    break;
+                default:
+                    break;
+            }
+            setTankDirection();
+        }
+
+        public void setTankDirection(){
+            if(bL) tank.setDir(Direction.LEFT);
+            if(bR) tank.setDir(Direction.RIGHT);
+            if(bU) tank.setDir(Direction.UP);
+            if(bD) tank.setDir(Direction.DOWN);
+        }
+    }
+}