day3，将图片放入images，建立test测试包，测试读取图片，实现坦克移动图片

tankWar/src/com/mashibing/tank/Bullet.java

@@ -1,3 +1,5 @@
+package com.mashibing.tank;
+
 import java.awt.*;
 
 /**

tankWar/src/com/mashibing/tank/Direction.java

@@ -1,3 +1,5 @@
+package com.mashibing.tank;
+
 /**
  * @Description: 方向枚举
  * @Author: zhanxinlin

tankWar/src/com/mashibing/tank/FrameTank.java

@@ -1,3 +1,5 @@
+package com.mashibing.tank;
+
 import java.awt.*;
 import java.awt.event.KeyAdapter;
 import java.awt.event.KeyEvent;

tankWar/src/com/mashibing/tank/Main.java

@@ -1,3 +1,5 @@
+package com.mashibing.tank;
+
 /**
  * @Description: 程序启动入口
  * @Author: zhanxinlin

tankWar/src/com/mashibing/tank/ResourceImageRead.java

@@ -0,0 +1,29 @@
+package com.mashibing.tank;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.io.IOException;
+
+/**
+ * @Description: 读取图片资源类
+ * @Author: zhanxinlin
+ * @Date: 2022-09-28 23:14
+ */
+public class ResourceImageRead {
+    public static BufferedImage TANK_LEFT;
+    public static BufferedImage TANK_UP;
+    public static BufferedImage TANK_RIGHT;
+    public static BufferedImage TANK_DOWN;
+
+    // 当ResourceImageRead类加载时，静态代码块执行，直接初始化
+    static {
+        try {
+            TANK_LEFT = ImageIO.read(ResourceImageRead.class.getClassLoader().getResourceAsStream("images/tankL.gif"));
+            TANK_UP = ImageIO.read(ResourceImageRead.class.getClassLoader().getResourceAsStream("images/tankU.gif"));
+            TANK_RIGHT = ImageIO.read(ResourceImageRead.class.getClassLoader().getResourceAsStream("images/tankR.gif"));
+            TANK_DOWN = ImageIO.read(ResourceImageRead.class.getClassLoader().getResourceAsStream("images/tankD.gif"));
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}

tankWar/src/com/mashibing/tank/Tank.java

@@ -1,3 +1,5 @@
+package com.mashibing.tank;
+
 import java.awt.*;
 
 /**
@@ -26,10 +28,23 @@ public class Tank {
      * @param g 画笔
      */
     public void paint(Graphics g) {
-        Color color = g.getColor();
-        g.setColor(Color.GREEN);
-        g.fillRect(x, y, 50, 50);
-        g.setColor(color);
+        // 画出坦克前后左右移动的图片
+        switch (direction) {
+            case LEFT:
+                g.drawImage(ResourceImageRead.TANK_LEFT, x, y, null);
+                break;
+            case UP:
+                g.drawImage(ResourceImageRead.TANK_UP, x, y, null);
+                break;
+            case RIGHT:
+                g.drawImage(ResourceImageRead.TANK_RIGHT, x, y, null);
+                break;
+            case DOWN:
+                g.drawImage(ResourceImageRead.TANK_DOWN, x, y, null);
+                break;
+        }
+
+        // 坦克移动
         move();
     }
 

tankWar/src/test/ImageTest.java

@@ -0,0 +1,33 @@
+package test;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+
+import org.junit.jupiter.api.Test;
+
+/**
+ * 读取图片测试类
+ */
+class ImageTest {
+
+	@Test
+	void test() {
+		
+		try {
+			// 读取图片路径写死，不推荐
+//			BufferedImage image = ImageIO.read(new File("C:/work/javaprojects/Tank_60/src/images/bulletD.gif"));
+//			assertNotNull(image);
+			
+			BufferedImage image2 = ImageIO.read(ImageTest.class.getClassLoader().getResourceAsStream("images/bulletD.gif"));
+			assertNotNull(image2);
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+	}
+
+}