代码格式

src/main/java/com/example/tankbattle/Bullet.java

@@ -4,8 +4,8 @@ import java.awt.Graphics;
 import java.awt.Color;
 
 public class Bullet {
-    public static final int SPEED = 10;
+    private static final int SPEED = 1;
-    private static final int WIDTH = 5, HEIGHT = 5;
+    private static final int WIDTH = 30, HEIGHT = 30;
     private int x, y;
     private Dir dir;
 
@@ -18,7 +18,7 @@ public class Bullet {
     public void paint(Graphics g) {
         Color c = g.getColor();
         g.setColor(Color.RED);
-        g.fillOval(x, y, 50, 50);
+        g.fillOval(x, y, WIDTH, HEIGHT);
         g.setColor(c);
         move();
     }

src/main/java/com/example/tankbattle/Tank.java

@@ -1,7 +1,7 @@
 package com.example.tankbattle;
 
-
+import java.awt.Graphics;
-import java.awt.*;
+import java.awt.Color;
 
 public class Tank {
     private int x,y;
@@ -39,10 +39,6 @@ public class Tank {
         move();
     }
 
-    public void fire(){
-        tf.bullets.add(new Bullet(this.x, this.y, this.dir));
-    }
-
     private void move() {
         if (!moving) {
             return;
@@ -64,4 +60,8 @@ public class Tank {
                 break;
         }
     }
+
+    public void fire(){
+        tf.bullets.add(new Bullet(this.x, this.y, this.dir));
+    }
 }

src/main/java/com/example/tankbattle/TankFrame.java

@@ -10,16 +10,13 @@ import java.util.List;
 
 public class TankFrame extends Frame {
 
-    private static final int SPEED = 10;
-
     Tank myTank = new Tank(200, 200, Dir.DOWN, this);
 
+    Bullet bullet = new Bullet(300, 300, Dir.DOWN);
     private static final int GAME_WIDTH = 800,GAME_HEIGHT=600;
 
     List<Bullet> bullets = new ArrayList<>();
 
-    Bullet bullet = new Bullet(300, 300, Dir.DOWN);
-
     public TankFrame() throws HeadlessException {
         setSize(GAME_WIDTH, GAME_HEIGHT);
         setResizable(false);
@@ -28,7 +25,7 @@ public class TankFrame extends Frame {
         addKeyListener(new MyKeyListener());
         addWindowListener(new WindowAdapter() {
             @Override
-            public void windowClosed(WindowEvent e) {
+            public void windowClosing(WindowEvent e) {
                 System.exit(0);
             }
         });
@@ -54,7 +51,7 @@ public class TankFrame extends Frame {
         myTank.paint(g);
         bullet.paint(g);
         for (Bullet bullet1 : bullets) {
-            bullet.paint(g);
+            bullet1.paint(g);
         }
     }