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| author | Gerald Barker <geraldbarker@gmail.com> | 2011-09-02 23:19:51 +0100 |
|---|---|---|
| committer | Gerald Barker <geraldbarker@gmail.com> | 2011-09-02 23:19:51 +0100 |
| commit | 53936c7ee6654a525075b03e1b4c8ddbfbcd4ef5 (patch) | |
| tree | 41154be6daecad1b4483223d72920e0a290024ef /src/org/apache/commons/lang3/mutable/MutableObject.java | |
| parent | afbe8c5164e1157e38e0f8c4b28942cbd9fe3d41 (diff) | |
| download | cgeo-53936c7ee6654a525075b03e1b4c8ddbfbcd4ef5.zip cgeo-53936c7ee6654a525075b03e1b4c8ddbfbcd4ef5.tar.gz cgeo-53936c7ee6654a525075b03e1b4c8ddbfbcd4ef5.tar.bz2 | |
First commit of Apache Commons String & Date functions and required, and
refactor of code to use them.
Diffstat (limited to 'src/org/apache/commons/lang3/mutable/MutableObject.java')
| -rw-r--r-- | src/org/apache/commons/lang3/mutable/MutableObject.java | 126 |
1 files changed, 126 insertions, 0 deletions
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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