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ss ads ats Listing 12.3 package jsjf; /** * Defines the interface to a stack colle ction. i er * @author Java Foundations * @version 4.0 public interface StackADT ME Adds the specified element to the to p of this stack. @param element element to be pushed onto the stack */ public void push(T element); * Removes and returns the top element from this stack. 624/1 * @return the element removed from the stack * public T pop(); ** * Returns without removing the top ele ment of this stack. * @return the element on top of the st ack public T peek(); /** * Returns true if this stack contains no elements. * @return true if the stack is empty */ public boolean isEmpty(); * Returns the number of elements in th is stack. * @return the number of elements in th e stack 624/1688 freda */ public int size(); st /** * Returns a string representation of t his stack. * @return a string representation of t he stack public String toString(); data cess som > StackADT chod soft! ratia Des push(T element) : void popo:T peek(): T isEmpty : boolean size(): int toString): String a spe basic as th only to th that Figure 12.8 The StackADT interface in UML