JAVA PROGRAMMING I need an expert to write Test application to run the MyArrayStack class. import java.util.Arrays; interface MyStack { public void push(T o); public T pop() throws StackEmptyException; public T peek(); public boolean isEmpty(); public int size(); } class MyArrayStack implements MyStack{ private static final int DEFAULT_STACK_SIZE = 100; T[] stackArray; int top = 0; public MyArrayStack() { this(DEFAULT_STACK_SIZE); } public MyArrayStack(int defaultSize) { top = 0; stackArray = (T[])new Object[defaultSize]; } public void push(T o) { if (size() == stackArray.length) expandCapacity(); stackArray[top] = o; top++; } private void expandCapacity() { stackArray = Arrays.copyOf(stackArray, stackArray.length*2); System.out.println("StackArray size is automatically expanded:" + stackArray.length); } public T pop() throws StackEmptyException { if (isEmpty()) throw new StackEmptyException("Stack is empty"); top--; T o = stackArray[top]; stackArray[top] = null; return o; } public T peek() { if (isEmpty()) return null; return stackArray[top-1]; } public boolean isEmpty() { if (top==0) return true; return false; } public int size() { return top; } } public class Main {    public static void main(String[] args) {        //Write Test application to run the MyArrayStack class.    } }

JAVA PROGRAMMING

I need an expert to write Test application to run the MyArrayStack<T> class.

import java.util.Arrays;

interface MyStack<T> {
public void push(T o);
public T pop() throws StackEmptyException;
public T peek();
public boolean isEmpty();
public int size();
}

class MyArrayStack<T> implements MyStack<T>{
private static final int DEFAULT_STACK_SIZE = 100;
T[] stackArray;
int top = 0;

public MyArrayStack() {
this(DEFAULT_STACK_SIZE);
}
public MyArrayStack(int defaultSize) {
top = 0;
stackArray = (T[])new Object[defaultSize];
}

public void push(T o) {
if (size() == stackArray.length) expandCapacity();
stackArray[top] = o;
top++;
}
private void expandCapacity() {
stackArray = Arrays.copyOf(stackArray, stackArray.length*2);
System.out.println("StackArray size is automatically expanded:" + stackArray.length);
}

public T pop() throws StackEmptyException {
if (isEmpty()) throw new StackEmptyException("Stack is empty");
top--;
T o = stackArray[top];
stackArray[top] = null;
return o;
}

public T peek() {
if (isEmpty()) return null;
return stackArray[top-1];
}
public boolean isEmpty() {
if (top==0) return true;
return false;
}

public int size() {
return top;
}
}

public class Main
{
   public static void main(String[] args) {
       //Write Test application to run the MyArrayStack<T> class.
   }
}