diff --git a/w/Cache.java b/w/Cache.java
deleted file mode 100644
index 18fa2f9..0000000
--- a/w/Cache.java
+++ /dev/null
@@ -1,51 +0,0 @@
-package w8;
-
-import java.util.HashMap;
-import java.util.Map;
-
-public class Cache<K, V> {
-    private final Map<K, V> cache = new HashMap<>();
-
-    // 存入缓存
-    public void put(K key, V value) {
-        cache.put(key, value);
-    }
-
-    // 从缓存获取
-    public V get(K key) {
-        return cache.get(key);
-    }
-
-    // 移除缓存
-    public V remove(K key) {
-        return cache.remove(key);
-    }
-
-    // 清空缓存
-    public void clear() {
-        cache.clear();
-    }
-
-    // 判断是否包含key
-    public boolean containsKey(K key) {
-        return cache.containsKey(key);
-    }
-
-    // 获取缓存大小
-    public int size() {
-        return cache.size();
-    }
-
-    // 测试
-    public static void main(String[] args) {
-        Cache<String, Integer> studentScore = new Cache<>();
-        studentScore.put("张三", 90);
-        studentScore.put("李四", 85);
-
-        System.out.println("张三的分数：" + studentScore.get("张三"));
-        System.out.println("缓存大小：" + studentScore.size());
-
-        studentScore.remove("李四");
-        System.out.println("移除李四后，缓存是否包含李四？" + studentScore.containsKey("李四"));
-    }
-}
\ No newline at end of file