ERXMutableInteger (Project Wonder Reference Documentation)

java.lang.Object
- er.extensions.foundation.ERXMutableInteger

```
public class ERXMutableInteger
extends Object
```
ERXMutableInteger is like Integer but mutable, to avoid the excess object creation involved in i = new Integer(i.getInt() + 1) which can get expensive if done a lot.
Not subclassed from Integer, since Integer is final (for performance.)
Original Author: Ian F. Darwin (Author of "Java Coolbook" ISBN: 0-596-00170-3)

Constructor Summary

Constructors
Constructor and Description

ERXMutableInteger(int value)
Constructs a newly allocated ERXMutableInteger object that represents the primitive int argument.

Constructors
Constructor and Description
`ERXMutableInteger(int value)` Constructs a newly allocated `ERXMutableInteger` object that represents the primitive int argument.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`decrement()` Decrements the int value of this `ERXMutalbleInteger` object by 1.
`void`	`decrement(int amount)` Decrements the int value of this `ERXMutalbleInteger` object by the int argument.
`void`	`increment()` Increments the int value of this `ERXMutalbleInteger` object by 1.
`void`	`increment(int amount)` Increments the int value of this `ERXMutalbleInteger` object by the int argument.
`int`	`intValue()` Returns the int value represented by this `ERXMutalbleInteger` object.
`static int`	`parseInt(String str)` Parses the string argument as a signed decimal integer.
`void`	`setIntValue(int value)` Updates the int value of this `ERXMutalbleInteger` object to the int argument.
`String`	`toString()` Returns a string object representing this `ERXMutalbeInteger`'s value.
`static String`	`toString(int value)` Creates a string representation of the int argument.

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

- Constructor Detail
  - ERXMutableInteger
```
public ERXMutableInteger(int value)
```
    Constructs a newly allocated ERXMutableInteger object that represents the primitive int argument.
    
    Parameters:
    
    value - the int value to be represented by the ERXMutalbleInteger object
- Method Detail
  - increment
```
public void increment()
```
    Increments the int value of this ERXMutalbleInteger object by 1.
  - increment
```
public void increment(int amount)
```
    Increments the int value of this ERXMutalbleInteger object by the int argument.
    
    Parameters:
    
    amount - the int amount to increment
  - decrement
```
public void decrement()
```
    Decrements the int value of this ERXMutalbleInteger object by 1.
  - decrement
```
public void decrement(int amount)
```
    Decrements the int value of this ERXMutalbleInteger object by the int argument.
    
    Parameters:
    
    amount - the int amount to decrement
  - setIntValue
```
public void setIntValue(int value)
```
    Updates the int value of this ERXMutalbleInteger object to the int argument.
    
    Parameters:
    
    value - the int value to set
  - intValue
```
public int intValue()
```
    Returns the int value represented by this ERXMutalbleInteger object.
    
    Returns:
    
    the int value of this object
  - toString
```
public String toString()
```
    Returns a string object representing this ERXMutalbeInteger's value. The value is converted to signed decimal representation and returned as a string, exactly as if the integer value were given as an argument to the toString(int) method.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    a string representation of the value of this object.
  - toString
```
public static String toString(int value)
```
    Creates a string representation of the int argument.
    
    Parameters:
    
    value - the int value to convert
    
    Returns:
    
    a string representation of the int argument
  - parseInt
```
public static int parseInt(String str)
                    throws NumberFormatException
```
    Parses the string argument as a signed decimal integer. The characters in the string must all be decimal digits, except that the first character may be an ASCII minus sign '-' to indicate a negative value. The resulting integer value is returned, exactly as if the argument was given as arguments to the Integer.parseInt method.
    
    Parameters:
    
    str - the string to parse
    
    Returns:
    
    the int represented by the argument in decimal
    
    Throws:
    
    NumberFormatException - if the String cannot be parsed as an int.

Class ERXMutableInteger

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ERXMutableInteger

Method Detail

increment

increment

decrement

decrement

setIntValue

intValue

toString

toString

parseInt