Stack Implementation

Stack Implementation in Java :
Following example shows how to implement stack in Java .

/**
 *
 * @author Anurag
 *
 *
 */
public class ArrayStack{

    private int array[];
    private int top;
    private int capacity;

ArrayStack(int capacity)
{
    this.capacity=capacity;
    this.array=new int[capacity];
    top=-1;
}
public boolean isEmpty()
{
    return top==-1?true:false;
}
public boolean isFull()
{
    return top==capacity-1?true:false;
}
public int Top()
{
    if (top==-1)
    {
        System.out.println("Stack is Empty");
    return -1;
}
    return array[top];
}

public void push(int e)
{
    if (top==capacity-1)
    {
        System.out.println("Stack is Full !");
        return;
    }
    array[++top]=e;
    return;
}

public int pop()
{
    if (top==-1)
    {
        System.out.println("Stack is Empty !");
        return -1;
    }
    return array[top--];
}
    public static void main(String[] args) {
        ArrayStack stack = new ArrayStack(5);
        stack.push(1);stack.push(2);stack.push(3);stack.push(4);stack.push(5);stack.push(6);
        System.out.println("Stack is Full :: "+stack.isFull());
        while(!stack.isEmpty())
        {
            System.out.println(""+stack.pop());
        }
        System.out.println("Stack is Empty :: "+stack.isEmpty());

    }
}