java.lang.Object
- java.lang.Number
- - org.apache.commons.lang.mutable.MutableInt

All Implemented Interfaces:

Serializable, Comparable, Mutable
```
public class MutableInt
extends Number
implements Comparable, Mutable
```
A mutable int wrapper.

Since:

2.1

Version:

$Id: MutableInt.java 905707 2010-02-02 16:59:59Z niallp $

See Also:

Integer, Serialized Form

Constructor Summary

Constructors
Constructor	Description
`MutableInt()`	Constructs a new MutableInt with the default value of zero.
`MutableInt(int value)`	Constructs a new MutableInt with the specified value.
`MutableInt(Number value)`	Constructs a new MutableInt with the specified value.
`MutableInt(String value)`	Constructs a new MutableInt parsing the given string.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`add(int operand)`	Adds a value to the value of this instance.
`void`	`add(Number operand)`	Adds a value to the value of this instance.
`int`	`compareTo(Object obj)`	Compares this mutable to another in ascending order.
`void`	`decrement()`	Decrements the value.
`double`	`doubleValue()`	Returns the value of this MutableInt as a double.
`boolean`	`equals(Object obj)`	Compares this object to the specified object.
`float`	`floatValue()`	Returns the value of this MutableInt as a float.
`Object`	`getValue()`	Gets the value as a Integer instance.
`int`	`hashCode()`	Returns a suitable hash code for this mutable.
`void`	`increment()`	Increments the value.
`int`	`intValue()`	Returns the value of this MutableInt as an int.
`long`	`longValue()`	Returns the value of this MutableInt as a long.
`void`	`setValue(int value)`	Sets the value.
`void`	`setValue(Object value)`	Sets the value from any Number instance.
`void`	`subtract(int operand)`	Subtracts a value from the value of this instance.
`void`	`subtract(Number operand)`	Subtracts a value from the value of this instance.
`Integer`	`toInteger()`	Gets this mutable as an instance of Integer.
`String`	`toString()`	Returns the String value of this mutable.

Methods inherited from class java.lang.Number
byteValue, shortValue

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - MutableInt
```
public MutableInt()
```
    Constructs a new MutableInt with the default value of zero.
  - MutableInt
```
public MutableInt(int value)
```
    Constructs a new MutableInt with the specified value.
    
    Parameters:
    
    value - the initial value to store
  - MutableInt
```
public MutableInt(Number value)
```
    Constructs a new MutableInt with the specified value.
    
    Parameters:
    
    value - the initial value to store, not null
    
    Throws:
    
    NullPointerException - if the object is null
  - MutableInt
```
public MutableInt(String value)
           throws NumberFormatException
```
    Constructs a new MutableInt parsing the given string.
    
    Parameters:
    
    value - the string to parse, not null
    
    Throws:
    
    NumberFormatException - if the string cannot be parsed into an int
    
    Since:
    
    2.5
- Method Detail
  - getValue
```
public Object getValue()
```
    Gets the value as a Integer instance.
    
    Specified by:
    
    getValue in interface Mutable
    
    Returns:
    
    the value as a Integer, never null
  - setValue
```
public void setValue(int value)
```
    Sets the value.
    
    Parameters:
    
    value - the value to set
  - setValue
```
public void setValue(Object value)
```
    Sets the value from any Number instance.
    
    Specified by:
    
    setValue in interface Mutable
    
    Parameters:
    
    value - the value to set, not null
    
    Throws:
    
    NullPointerException - if the object is null
    
    ClassCastException - if the type is not a Number
  - increment
```
public void increment()
```
    Increments the value.
    
    Since:
    
    Commons Lang 2.2
  - decrement
```
public void decrement()
```
    Decrements the value.
    
    Since:
    
    Commons Lang 2.2
  - add
```
public void add(int operand)
```
    Adds a value to the value of this instance.
    
    Parameters:
    
    operand - the value to add, not null
    
    Since:
    
    Commons Lang 2.2
  - add
```
public void add(Number operand)
```
    Adds a value to the value of this instance.
    
    Parameters:
    
    operand - the value to add, not null
    
    Throws:
    
    NullPointerException - if the object is null
    
    Since:
    
    Commons Lang 2.2
  - subtract
```
public void subtract(int operand)
```
    Subtracts a value from the value of this instance.
    
    Parameters:
    
    operand - the value to subtract, not null
    
    Since:
    
    Commons Lang 2.2
  - subtract
```
public void subtract(Number operand)
```
    Subtracts a value from the value of this instance.
    
    Parameters:
    
    operand - the value to subtract, not null
    
    Throws:
    
    NullPointerException - if the object is null
    
    Since:
    
    Commons Lang 2.2
  - intValue
```
public int intValue()
```
    Returns the value of this MutableInt as an int.
    
    Specified by:
    
    intValue in class Number
    
    Returns:
    
    the numeric value represented by this object after conversion to type int.
  - longValue
```
public long longValue()
```
    Returns the value of this MutableInt as a long.
    
    Specified by:
    
    longValue in class Number
    
    Returns:
    
    the numeric value represented by this object after conversion to type long.
  - floatValue
```
public float floatValue()
```
    Returns the value of this MutableInt as a float.
    
    Specified by:
    
    floatValue in class Number
    
    Returns:
    
    the numeric value represented by this object after conversion to type float.
  - doubleValue
```
public double doubleValue()
```
    Returns the value of this MutableInt as a double.
    
    Specified by:
    
    doubleValue in class Number
    
    Returns:
    
    the numeric value represented by this object after conversion to type double.
  - toInteger
```
public Integer toInteger()
```
    Gets this mutable as an instance of Integer.
    
    Returns:
    
    a Integer instance containing the value from this mutable, never null
  - equals
```
public boolean equals(Object obj)
```
    Compares this object to the specified object. The result is true if and only if the argument is not null and is a MutableInt object that contains the same int value as this object.
    
    Overrides:
    
    equals in class Object
    
    Parameters:
    
    obj - the object to compare with, null returns false
    
    Returns:
    
    true if the objects are the same; false otherwise.
  - hashCode
```
public int hashCode()
```
    Returns a suitable hash code for this mutable.
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    
    a suitable hash code
  - compareTo
```
public int compareTo(Object obj)
```
    Compares this mutable to another in ascending order.
    
    Specified by:
    
    compareTo in interface Comparable
    
    Parameters:
    
    obj - the other mutable to compare to, not null
    
    Returns:
    
    negative if this is less, zero if equal, positive if greater
    
    Throws:
    
    ClassCastException - if the argument is not a MutableInt
  - toString
```
public String toString()
```
    Returns the String value of this mutable.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    the mutable value as a string

Class MutableInt

Constructor Summary

Method Summary

Methods inherited from class java.lang.Number

Methods inherited from class java.lang.Object

Constructor Detail

MutableInt

MutableInt

MutableInt

MutableInt

Method Detail

getValue

setValue

setValue

increment

decrement

add

add

subtract

subtract

intValue

longValue

floatValue

doubleValue

toInteger

equals

hashCode

compareTo

toString