jist.swans.misc
Class SingletonInt

java.lang.Object
  jist.swans.misc.SingletonInt

public class SingletonInt
extends java.lang.Object

Class to store a mutable primitive integer with in an Object (because Java has primitives in the first place).

Since:

SWANS1.0

Version:

$Id: SingletonInt.java,v 1.4 2004/04/06 16:07:49 barr Exp $

Author:

Rimon Barr <barr+jist@cs.cornell.edu>

Field Summary

int	i encapsulated integer.
private static java.lang.Integer[]	INTS Array of (commonly requested) Integer object for small integer primitives.

Constructor Summary

SingletonInt()
Create a new singleton integer with value zero.

SingletonInt(int i)
Create a new singleton integer with given value.

Method Summary

static java.lang.Integer

getSmallInteger(int i) Return the Integer for a small integer, hopefully without a new allocation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

i

public int i

encapsulated integer.

INTS

private static final java.lang.Integer[] INTS

Array of (commonly requested) Integer object for small integer primitives.

Constructor Detail

SingletonInt

public SingletonInt()

Create a new singleton integer with value zero.

SingletonInt

public SingletonInt(int i)

Create a new singleton integer with given value.

Parameters:

i - initial singleton integer value

Method Detail

getSmallInteger

public static java.lang.Integer getSmallInteger(int i)

Return the Integer for a small integer, hopefully without a new allocation.

Parameters:

i - some integer to convert to an Integer

Returns:

Integer object corresponding integer primitive