From 53936c7ee6654a525075b03e1b4c8ddbfbcd4ef5 Mon Sep 17 00:00:00 2001
From: Gerald Barker <geraldbarker@gmail.com>
Date: Fri, 2 Sep 2011 23:19:51 +0100
Subject: First commit of Apache Commons String & Date functions and required,
 and refactor of code to use them.

---
 .../commons/lang3/mutable/MutableObject.java       | 126 +++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 src/org/apache/commons/lang3/mutable/MutableObject.java

(limited to 'src/org/apache/commons/lang3/mutable/MutableObject.java')

diff --git a/src/org/apache/commons/lang3/mutable/MutableObject.java b/src/org/apache/commons/lang3/mutable/MutableObject.java
new file mode 100644
index 0000000..74c4f35
--- /dev/null
+++ b/src/org/apache/commons/lang3/mutable/MutableObject.java
@@ -0,0 +1,126 @@
+/*
+ * 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.commons.lang3.mutable;
+
+import java.io.Serializable;
+
+/**
+ * A mutable <code>Object</code> wrapper.
+ * 
+ * @since 2.1
+ * @version $Id: MutableObject.java 1088899 2011-04-05 05:31:27Z bayard $
+ */
+public class MutableObject<T> implements Mutable<T>, Serializable {
+
+    /**
+     * Required for serialization support.
+     * 
+     * @see java.io.Serializable
+     */
+    private static final long serialVersionUID = 86241875189L;
+
+    /** The mutable value. */
+    private T value;
+
+    /**
+     * Constructs a new MutableObject with the default value of <code>null</code>.
+     */
+    public MutableObject() {
+        super();
+    }
+
+    /**
+     * Constructs a new MutableObject with the specified value.
+     * 
+     * @param value  the initial value to store
+     */
+    public MutableObject(T value) {
+        super();
+        this.value = value;
+    }
+
+    //-----------------------------------------------------------------------
+    /**
+     * Gets the value.
+     * 
+     * @return the value, may be null
+     */
+    public T getValue() {
+        return this.value;
+    }
+
+    /**
+     * Sets the value.
+     * 
+     * @param value  the value to set
+     */
+    public void setValue(T value) {
+        this.value = value;
+    }
+
+    //-----------------------------------------------------------------------
+    /**
+     * <p>
+     * Compares this object against the specified object. The result is <code>true</code> if and only if the argument
+     * is not <code>null</code> and is a <code>MutableObject</code> object that contains the same <code>T</code>
+     * value as this object.
+     * </p>
+     * 
+     * @param obj  the object to compare with, <code>null</code> returns <code>false</code>
+     * @return  <code>true</code> if the objects are the same;
+     *          <code>true</code> if the objects have equivalent <code>value</code> fields;
+     *          <code>false</code> otherwise.
+     */
+    @Override
+    public boolean equals(Object obj) {
+        if (obj == null) {
+            return false;
+        }
+        if (this == obj) {
+            return true;
+        }
+        if (this.getClass() == obj.getClass()) {
+            MutableObject<?> that = (MutableObject<?>) obj;
+            return this.value.equals(that.value);
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Returns the value's hash code or <code>0</code> if the value is <code>null</code>.
+     * 
+     * @return the value's hash code or <code>0</code> if the value is <code>null</code>.
+     */
+    @Override
+    public int hashCode() {
+        return value == null ? 0 : value.hashCode();
+    }
+
+    //-----------------------------------------------------------------------
+    /**
+     * Returns the String value of this mutable.
+     * 
+     * @return the mutable value as a string
+     */
+    @Override
+    public String toString() {
+        return value == null ? "null" : value.toString();
+    }
+
+}
-- 
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