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<H1>Stack</H1>
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The Stack extends the Vector with stack functionality.
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boolean empty() : Tests if this stack is empty.
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Object peek() : Looks at the object at the top of this
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stack without removing it.
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Object pop() : Removes the object at the top of this
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stack and returns that object as the
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value of this function.
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void push(Object): Pushes an item onto the top of this stack.
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int search(Object): Returns where an object is on this stack. </UL></P>
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