Stack

java.lang.Object
- org.apache.mina.util.Stack

All Implemented Interfaces:

java.io.Serializable
```
public class Stack
extends java.lang.Object
implements java.io.Serializable
```
A unbounded stack.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

Stack()
Construct a new, empty stack.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`clear()`	Clears this stack.
`java.lang.Object`	`first()`	Returns the first element of the stack.
`boolean`	`isEmpty()`	Returns `true` if the stack is empty.
`java.lang.Object`	`last()`
`java.lang.Object`	`pop()`	Pops from this stack.
`void`	`push(java.lang.Object obj)`	Push into this stack.
`void`	`remove(java.lang.Object o)`
`int`	`size()`	Returns the number of elements in the stack.

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

- Constructor Detail
  - Stack
```
public Stack()
```
    Construct a new, empty stack.
- Method Detail
  - clear
```
public void clear()
```
    Clears this stack.
  - pop
```
public java.lang.Object pop()
```
    Pops from this stack.
    
    Returns:
    
    null, if this stack is empty or the element is really null.
  - push
```
public void push(java.lang.Object obj)
```
    Push into this stack.
  - remove
```
public void remove(java.lang.Object o)
```
  - first
```
public java.lang.Object first()
```
    Returns the first element of the stack.
    
    Returns:
    
    null, if the stack is empty, or the element is really null.
  - last
```
public java.lang.Object last()
```
  - isEmpty
```
public boolean isEmpty()
```
    Returns true if the stack is empty.
  - size
```
public int size()
```
    Returns the number of elements in the stack.