please complete this code in Java

Listing 12.3 package jsjf; /** * Defines the interface to a stack collection. * @author Java Foundations * @version 4.0 o public interface StackADT * Adds the specified element to the top 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. * @return the element removed from the stack public T pop(); /** * Returns without removing the top element of this stack. * @return the element on top of the stack public T peek(); * Returns true if this stack contains no elements. * @return true if the stack is empty public boolean isEmpty(); Stac /** - Returns the number of elements in this stack. * @return the number of elements in the stack public int size(); 500/1435 * Returns a string representation of this stack. * @return a string representation of the stack * public String toString(); > StackADT push(T element) : void pop(): T peek(): T isEmpty : boolean size(): int toString : String Figure 12.8 The StackADT interface in UML Stack Interface Listing 12.3 package jsjf; /** * Defines the interface to a stack collection. * @author Java Foundations * @version 4.0 o public interface StackADT * Adds the specified element to the top 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. * @return the element removed from the stack public T pop(); /** * Returns without removing the top element of this stack. * @return the element on top of the stack public T peek(); * Returns true if this stack contains no elements. * @return true if the stack is empty public boolean isEmpty(); Stac /** - Returns the number of elements in this stack. * @return the number of elements in the stack public int size(); 500/1435 * Returns a string representation of this stack. * @return a string representation of the stack * public String toString(); > StackADT push(T element) : void pop(): T peek(): T isEmpty : boolean size(): int toString : String Figure 12.8 The StackADT interface in UML Stack Interface