From 64e029c638d20321c963f641259517bb233b485a Mon Sep 17 00:00:00 2001
From: HuangZhikai <386754646@qq.com>
Date: Wed, 29 Apr 2026 21:36:17 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=8A=E4=BC=A0=E6=96=87=E4=BB=B6=E8=87=B3?=
 =?UTF-8?q?=20'w8'?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 w8/Cache.java | 20 ++++++++++++++++++++
 w8/Main.java  |  9 +++++++++
 w8/Pair.java  | 18 ++++++++++++++++++
 3 files changed, 47 insertions(+)
 create mode 100644 w8/Cache.java
 create mode 100644 w8/Main.java
 create mode 100644 w8/Pair.java

diff --git a/w8/Cache.java b/w8/Cache.java
new file mode 100644
index 0000000..9136e2e
--- /dev/null
+++ b/w8/Cache.java
@@ -0,0 +1,20 @@
+import java.util.HashMap;
+ import java.util.Map;
+public class Cache<K, V> {
+     private final Map<K, V> cache;
+     public Cache() {
+         cache = new HashMap<>();
+     }
+     public synchronized void put(K key, V value) {
+         cache.put(key, value);
+     }
+     public synchronized V get(K key) {
+         return cache.get(key);
+     }
+     public synchronized boolean hasKey(K key) {
+         return cache.containsKey(key);
+     }
+     public synchronized void remove(K key) {
+         cache.remove(key);
+     }
+ }
\ No newline at end of file
diff --git a/w8/Main.java b/w8/Main.java
new file mode 100644
index 0000000..44fba21
--- /dev/null
+++ b/w8/Main.java
@@ -0,0 +1,9 @@
+public class Main {
+    public void main(){
+        Pair pair=new Pair("鞋子",7);
+        Pair pair2=pair.swap(pair);
+        Object a=pair2.getkey();
+        Object b=pair2.getvalue();
+        System.out.println("pair2的key是 "+a+" value 是 "+b);
+    }
+}
diff --git a/w8/Pair.java b/w8/Pair.java
new file mode 100644
index 0000000..ac7c89b
--- /dev/null
+++ b/w8/Pair.java
@@ -0,0 +1,18 @@
+public class Pair<K,V>{
+    K key;
+    V value;
+    public Pair(K key,V value){
+        this.key=key;
+        this.value=value;
+    }
+    public K getkey(){
+        return key;
+    }
+    public V getvalue(){
+        return value;
+    }
+    public static Pair swap (Pair pair){
+        return new Pair(pair.getvalue(),pair.getkey());
+
+    }
+}
\ No newline at end of file