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-rw-r--r--src/org/apache/commons/lang3/mutable/MutableInt.java273
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diff --git a/src/org/apache/commons/lang3/mutable/MutableInt.java b/src/org/apache/commons/lang3/mutable/MutableInt.java
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-/*
- * 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;
-
-/**
- * A mutable <code>int</code> wrapper.
- * <p>
- * Note that as MutableInt does not extend Integer, it is not treated by String.format as an Integer parameter.
- *
- * @see Integer
- * @since 2.1
- * @version $Id: MutableInt.java 1160571 2011-08-23 07:36:08Z bayard $
- */
-public class MutableInt extends Number implements Comparable<MutableInt>, Mutable<Number> {
-
- /**
- * Required for serialization support.
- *
- * @see java.io.Serializable
- */
- private static final long serialVersionUID = 512176391864L;
-
- /** The mutable value. */
- private int value;
-
- /**
- * Constructs a new MutableInt with the default value of zero.
- */
- public MutableInt() {
- super();
- }
-
- /**
- * Constructs a new MutableInt with the specified value.
- *
- * @param value the initial value to store
- */
- public MutableInt(int value) {
- super();
- this.value = value;
- }
-
- /**
- * Constructs a new MutableInt with the specified value.
- *
- * @param value the initial value to store, not null
- * @throws NullPointerException if the object is null
- */
- public MutableInt(Number value) {
- super();
- this.value = value.intValue();
- }
-
- /**
- * Constructs a new MutableInt parsing the given string.
- *
- * @param value the string to parse, not null
- * @throws NumberFormatException if the string cannot be parsed into an int
- * @since 2.5
- */
- public MutableInt(String value) throws NumberFormatException {
- super();
- this.value = Integer.parseInt(value);
- }
-
- //-----------------------------------------------------------------------
- /**
- * Gets the value as a Integer instance.
- *
- * @return the value as a Integer, never null
- */
- public Integer getValue() {
- return Integer.valueOf(this.value);
- }
-
- /**
- * Sets the value.
- *
- * @param value the value to set
- */
- public void setValue(int value) {
- this.value = value;
- }
-
- /**
- * Sets the value from any Number instance.
- *
- * @param value the value to set, not null
- * @throws NullPointerException if the object is null
- */
- public void setValue(Number value) {
- this.value = value.intValue();
- }
-
- //-----------------------------------------------------------------------
- /**
- * Increments the value.
- *
- * @since Commons Lang 2.2
- */
- public void increment() {
- value++;
- }
-
- /**
- * Decrements the value.
- *
- * @since Commons Lang 2.2
- */
- public void decrement() {
- value--;
- }
-
- //-----------------------------------------------------------------------
- /**
- * Adds a value to the value of this instance.
- *
- * @param operand the value to add, not null
- * @since Commons Lang 2.2
- */
- public void add(int operand) {
- this.value += operand;
- }
-
- /**
- * Adds a value to the value of this instance.
- *
- * @param operand the value to add, not null
- * @throws NullPointerException if the object is null
- * @since Commons Lang 2.2
- */
- public void add(Number operand) {
- this.value += operand.intValue();
- }
-
- /**
- * Subtracts a value from the value of this instance.
- *
- * @param operand the value to subtract, not null
- * @since Commons Lang 2.2
- */
- public void subtract(int operand) {
- this.value -= operand;
- }
-
- /**
- * Subtracts a value from the value of this instance.
- *
- * @param operand the value to subtract, not null
- * @throws NullPointerException if the object is null
- * @since Commons Lang 2.2
- */
- public void subtract(Number operand) {
- this.value -= operand.intValue();
- }
-
- //-----------------------------------------------------------------------
- // shortValue and byteValue rely on Number implementation
- /**
- * Returns the value of this MutableInt as an int.
- *
- * @return the numeric value represented by this object after conversion to type int.
- */
- @Override
- public int intValue() {
- return value;
- }
-
- /**
- * Returns the value of this MutableInt as a long.
- *
- * @return the numeric value represented by this object after conversion to type long.
- */
- @Override
- public long longValue() {
- return value;
- }
-
- /**
- * Returns the value of this MutableInt as a float.
- *
- * @return the numeric value represented by this object after conversion to type float.
- */
- @Override
- public float floatValue() {
- return value;
- }
-
- /**
- * Returns the value of this MutableInt as a double.
- *
- * @return the numeric value represented by this object after conversion to type double.
- */
- @Override
- public double doubleValue() {
- return value;
- }
-
- //-----------------------------------------------------------------------
- /**
- * Gets this mutable as an instance of Integer.
- *
- * @return a Integer instance containing the value from this mutable, never null
- */
- public Integer toInteger() {
- return Integer.valueOf(intValue());
- }
-
- //-----------------------------------------------------------------------
- /**
- * Compares this object to the specified object. The result is <code>true</code> if and only if the argument is
- * not <code>null</code> and is a <code>MutableInt</code> object that contains the same <code>int</code> value
- * as this object.
- *
- * @param obj the object to compare with, null returns false
- * @return <code>true</code> if the objects are the same; <code>false</code> otherwise.
- */
- @Override
- public boolean equals(Object obj) {
- if (obj instanceof MutableInt) {
- return value == ((MutableInt) obj).intValue();
- }
- return false;
- }
-
- /**
- * Returns a suitable hash code for this mutable.
- *
- * @return a suitable hash code
- */
- @Override
- public int hashCode() {
- return value;
- }
-
- //-----------------------------------------------------------------------
- /**
- * Compares this mutable to another in ascending order.
- *
- * @param other the other mutable to compare to, not null
- * @return negative if this is less, zero if equal, positive if greater
- */
- public int compareTo(MutableInt other) {
- int anotherVal = other.value;
- return value < anotherVal ? -1 : (value == anotherVal ? 0 : 1);
- }
-
- //-----------------------------------------------------------------------
- /**
- * Returns the String value of this mutable.
- *
- * @return the mutable value as a string
- */
- @Override
- public String toString() {
- return String.valueOf(value);
- }
-
-}