删除set方法

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

@@ -28,8 +28,8 @@ public class Tank {
         this.x = x;
         this.y = y;
         this.dir = dir;
-        this.tf = tf;
         this.group = group;
+        this.tf = tf;
     }
 
     public void fire(){
@@ -46,18 +46,6 @@ public class Tank {
         return x;
     }
 
-    public void setX(int x) {
-        this.x = x;
-    }
-
-    public int getY() {
-        return y;
-    }
-
-    public void setY(int y) {
-        this.y = y;
-    }
-
     public Group getGroup() {
         return group;
     }
@@ -66,6 +54,10 @@ public class Tank {
         this.group = group;
     }
 
+    public int getY() {
+        return y;
+    }
+
     public boolean isMoving() {
         return moving;
     }

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

@@ -17,7 +17,7 @@ public class TankFrame extends Frame {
 
     List<Bullet> bullets = new ArrayList<>();
     List<Tank> tanks = new ArrayList<>();
-	public static final int GAME_WIDTH = 800,GAME_HEIGHT=600;
+    static final int GAME_WIDTH = 800,GAME_HEIGHT=600;
 
 	public TankFrame() {
         setSize(GAME_WIDTH, GAME_HEIGHT);
@@ -133,6 +133,7 @@ public class TankFrame extends Frame {
         }
 
         private void setMainTankDir() {
+
             if (!bL && !bU && !bR && !bD) {
                 myTank.setMoving(false);
             } else {