de.uni_hildesheim.sse.monitoring.runtime.utils

Class Stack<E>

java.lang.Object

de.uni_hildesheim.sse.monitoring.runtime.utils.Stack<E>

Type Parameters:

E - the type of elements to store in the stack

public class Stack<E>
extends java.lang.Object

Implements a stack of typed elements.

Since:

1.00

Version:

1.00

Author:

Holger Eichelberger

Field Summary

Fields

Modifier and Type	Field and Description
private ArrayList<E>	data Stores the stack elements.

Constructor Summary

Constructors

Constructor and Description
Stack() Creates a new stack.

Method Summary

Modifier and Type	Method and Description
boolean	empty() Tests if this stack is empty.
E	peek() Looks at the object at the top of this stack without removing it from the stack.
E	pop() Removes the object at the top of this stack and returns that object as the value of this function.
E	push(E item) Pushes an item onto the top of this stack.

Methods inherited from class java.lang.Object

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

Field Detail

data

private ArrayList<E> data

Stores the stack elements.

Constructor Detail

Stack

public Stack()

Creates a new stack.

Since:

1.00

Method Detail

push

public E push(E item)

Pushes an item onto the top of this stack.

Parameters:

item - the item to be pushed onto this stack.

Returns:

the item argument.

See Also:

Vector.addElement(E)

pop

public E pop()

Removes the object at the top of this stack and returns that object as the value of this function.

Returns:

The object at the top of this stack.

Throws:

java.util.EmptyStackException - if this stack is empty.

peek

public E peek()

Looks at the object at the top of this stack without removing it from the stack.

Returns:

the object at the top of this stack.

Throws:

java.util.EmptyStackException - if this stack is empty.

empty

public boolean empty()

Tests if this stack is empty.

Returns:

true if and only if this stack contains no items; false otherwise.