新增TankFrame

src/com/msb/TankDemo.java

@@ -1,9 +1,5 @@
 package com.msb;
 
-import java.awt.*;
-import java.awt.event.WindowAdapter;
-import java.awt.event.WindowEvent;
-
 /**
  * @Author bingor
  * @Date 2022-09-29 11:02
@@ -13,17 +9,7 @@ import java.awt.event.WindowEvent;
 public class TankDemo {
 
     public static void main(String[] args) {
-        Frame frame = new Frame();
+         TankFrame tankFrame = new TankFrame();
-        frame.setTitle("Tank war");
-        frame.setSize(200, 100);
-        frame.setResizable(true);
-        frame.setVisible(true);
-        frame.addWindowListener(new WindowAdapter() {
-            @Override
-            public void windowClosing(WindowEvent e) {
-                System.exit(0);
-            }
-        });
     }
 
 }

src/com/msb/TankFrame.java

@@ -0,0 +1,37 @@
+package com.msb;
+
+import java.awt.*;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+
+/**
+ * @Author bingor
+ * @Date 2022-09-29 16:24
+ * @Description: com.msb
+ * @Version: 1.0
+ */
+public class TankFrame extends Frame {
+
+    private int x = 200;
+    private int y = 200;
+
+    public TankFrame() {
+        setTitle("Tank war");
+        setSize(800, 600);
+        setResizable(true);
+        setVisible(true);
+        addWindowListener(new WindowAdapter() {
+            @Override
+            public void windowClosing(WindowEvent e) {
+                super.windowClosing(e);
+                System.exit(0);
+            }
+        });
+    }
+
+    @Override
+    public void paint(Graphics g) {
+        super.paint(g);
+        g.fillRect(x, y, 50, 50);
+    }
+}