Java programming  I have to do the "Resize method" which I believe if the array is full, it should resize so there is space.

Java programming 

I have to do the "Resize method" which I believe if the array is full, it should resize so there is space.

Ill paste the code below: 

package circularQueue;

/*

 * Design the class that would implement the interfaceiQueue. 

 */

public class cirQueue <T> implements iQueue <T> {

//Array of T objects 

private T[] Ar; //reference to array of objects 

//int size keeps track of how many elements in the queue

int size = 0;

//first the index to the head of the queue

int first = -1;

//last the index the last element of the queue

int last = -1;

public cirQueue() {

Ar = (T[]) new Object[5];

size = 0;

first = last = -1;

}

public int size() {

return size;

}

public boolean empty() {

return (size == 0);

}

private void resize() {

//HW TODO

}

//inserts element e at the back of the queue

public void insert(T e) {

if(this.empty()) {

first = last = 0;

//insert e at indx 0;

Ar[first] = e;

size = 1;

return;

}

if(size == Ar.length) {

//resize HW complete this one. 

this.resize();

}

//increase last by one, make sure it circulate back to 0 if it reaches capacity-1

last = (last + 1) % Ar.length;

//insert e at index last 

Ar[last] = e;

//increase the size 

size++;

}

public T remove() {

if(this.empty()) {

System.out.println("Error empty queue");

return null;

}

T save = Ar[first];

first = (first + 1) % Ar.length;

size--;

return save;

}

public String toString() {

if(this.empty())

return "[]";

String st = "[";

//build your string [-1, -3, -9]

int temp = first;

for(int i = 0; i < size-1; i++) {

//in the loop your are always dealing with element i

//v element i is Ar[i]

//append Ar[i], to the string

st += Ar[temp].toString() + ", ";

temp = (temp + 1) % Ar.length;

}

//close the bracket 

st += Ar[temp].toString() + "]";

return st;

}

}