[Update] 补充Javadoc, 设置@SuppressWarning注解;

src/main/java/net/lamgc/cgj/bot/cache/CacheStore.java

@@ -2,6 +2,10 @@ package net.lamgc.cgj.bot.cache;
 
 import java.util.Date;
 
+/**
+ * 缓存库接口
+ * @param <T> 缓存数据类型
+ */
 public interface CacheStore<T> {
 
     /**

src/main/java/net/lamgc/cgj/bot/cache/ImageCacheHandler.java

@@ -27,6 +27,7 @@ public class ImageCacheHandler implements EventHandler {
 
     private final static Set<ImageCacheObject> cacheQueue = Collections.synchronizedSet(new HashSet<>());
 
+    @SuppressWarnings("unused")
     public void getImageToCache(ImageCacheObject event) {
         if(cacheQueue.contains(event)) {
             log.info("图片 {} 已存在相同缓存任务, 跳过.", event.getStoreFile().getName());

src/main/java/net/lamgc/cgj/bot/cache/LocalHashCacheStore.java

@@ -7,6 +7,10 @@ import java.util.Hashtable;
 import java.util.Objects;
 import java.util.concurrent.atomic.AtomicReference;
 
+/**
+ * 基于Hashtable的本地缓存库
+ * @param <T> 缓存类型
+ */
 public class LocalHashCacheStore<T> implements CacheStore<T> {
 
     private final Hashtable<String, CacheObject<T>> cache;