net.pwall.util

Class ImmutableBase<A>

java.lang.Object

net.pwall.util.ImmutableBase<A>

Type Parameters:

A - the array item type

Direct Known Subclasses:

ImmutableCollectionBase, ImmutableMap

public abstract class ImmutableBase<A>
extends Object

Base class for immutable collections. Holds the array and provides functions common to all classes.

Author:

Peter Wall

Method Summary

Modifier and Type	Method and Description
void	clear() Modifying operation - not allowed.
boolean	isEmpty() Return true if the collection is empty.
int	size() Get the number of elements in the collection.

Methods inherited from class java.lang.Object

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

Method Detail

size

public int size()

Get the number of elements in the collection.

Returns:

the number of elements

isEmpty

public boolean isEmpty()

Return true if the collection is empty.

Returns:

true if the collection is empty

clear

public void clear()

Modifying operation - not allowed.

Throws:

UnsupportedOperationException - (in all cases)