org.jfree.util

Class FastStack

java.lang.Object

org.jfree.util.FastStack

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

public final class FastStack
extends java.lang.Object
implements java.io.Serializable, java.lang.Cloneable

A very simple unsynchronized stack. This one is faster than the java.util-Version.

Author:

Thomas Morgner

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
FastStack() Creates a new empty stack.
FastStack(int size) Creates a new empty stack with the specified initial storage size.

Method Summary

Methods

Modifier and Type	Method and Description
void	clear() Clears the stack.
java.lang.Object	clone() Returns a clone of the stack.
java.lang.Object	get(int index) Returns the item at the specified slot in the stack.
boolean	isEmpty() Returns true if the stack is empty, and false otherwise.
java.lang.Object	peek() Returns the object at the top of the stack without removing it.
java.lang.Object	pop() Removes and returns the object from the top of the stack.
void	push(java.lang.Object o) Pushes an object onto the stack.
int	size() Returns the number of elements in the stack.

Methods inherited from class java.lang.Object

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

Constructor Detail

FastStack

public FastStack()

Creates a new empty stack.

FastStack

public FastStack(int size)

Creates a new empty stack with the specified initial storage size.

Parameters:

size - the initial storage elements.

Method Detail

isEmpty

public boolean isEmpty()

Returns true if the stack is empty, and false otherwise.

Returns:

A boolean.

size

public int size()

Returns the number of elements in the stack.

Returns:

The element count.

push

public void push(java.lang.Object o)

Pushes an object onto the stack.

Parameters:

o - the object.

peek

public java.lang.Object peek()

Returns the object at the top of the stack without removing it.

Returns:

The object at the top of the stack.

pop

public java.lang.Object pop()

Removes and returns the object from the top of the stack.

Returns:

The object.

clone

public java.lang.Object clone()

Returns a clone of the stack.

Overrides:

clone in class java.lang.Object

Returns:

A clone.

clear

public void clear()

Clears the stack.

get

public java.lang.Object get(int index)

Returns the item at the specified slot in the stack.

Parameters:

index - the index.

Returns:

The item.