ArrayListStack (Payara Project 6.2022.1.Alpha3 API)

java.lang.Object
- com.sun.jts.pi.ArrayListStack

```
public class ArrayListStack
extends Object
```
The ArrayListStack class represents a last-in-first-out (LIFO) stack of objects. It encapsulates class ArrayList with four operations that allow a list to be treated as a stack. The usual push and pop operations are provided, as well as a method to peek at the top item on the stack, and a method to test for whether the stack is empty
When a stack is first created, it contains no items.

Version:

$Revision: 1.3 $ on $Date: 2005/12/25 04:12:09 $

Author:

Darpan Dinker, $Author: tcfujii $

Constructor Summary

Constructors
Constructor Description

ArrayListStack()
Creates a stack with a default size

ArrayListStack(int size)
Creates a stack with the given initial size

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`empty()`	Tests if this stack is empty.
`Object`	`peek()`	Looks at the object at the top of this stack without removing it from the stack.
`Object`	`pop()`	Removes the object at the top of this stack and returns that object as the value of this function.
`void`	`push(Object obj)`	Pushes an item onto the top of this stack.
`int`	`size()`	Provides the current size of the stack.

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

- Constructor Detail
  - ArrayListStack
```
public ArrayListStack(int size)
```
    Creates a stack with the given initial size
  - ArrayListStack
```
public ArrayListStack()
```
    Creates a stack with a default size
- Method Detail
  - size
```
public int size()
```
    Provides the current size of the stack.
    
    Returns:
    
    int return the current size.
  - push
```
public void push(Object obj)
```
    Pushes an item onto the top of this stack. This method will internally add elements to the ArrayList if the stack is full.
    
    Parameters:
    
    obj - the object to be pushed onto this stack.
    
    See Also:
    
    ArrayList.add(E, java.lang.Object[], int)
  - pop
```
public Object 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 (the last item of the ArrayList object). Null if 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.
  - peek
```
public Object 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 (the last item of the ArrayList object). Null if stack is empty.