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diff --git a/unused/srcjar_unused/org/apache/log4j/CategoryKey.java b/unused/srcjar_unused/org/apache/log4j/CategoryKey.java
new file mode 100644
index 0000000..e6f96c6
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+++ b/unused/srcjar_unused/org/apache/log4j/CategoryKey.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.log4j;
+
+/**
+   CategoryKey is a wrapper for String that apparently accellerated
+   hash table lookup in early JVM's.
+   @author Ceki Gülcü 
+*/
+class CategoryKey {
+
+  String   name;  
+  int hashCache;
+
+  CategoryKey(String name) {
+    this.name = name;
+    hashCache = name.hashCode();
+  }
+
+  final
+  public  
+  int hashCode() {
+    return hashCache;
+  }
+
+  final
+  public
+  boolean equals(Object rArg) {
+    if(this == rArg) {
+        return true;
+    }
+    
+    if(rArg != null && CategoryKey.class == rArg.getClass()) {
+        return  name.equals(((CategoryKey)rArg ).name);
+    } else {
+        return false;
+    }
+  }
+}