public class ArrayQueue<E> implements Queue<E> {
    Array<E> array;
    public ArrayQueue (int capacity){
array = new Array<>(capacity);
    }
public ArrayQueue (){
array = new Array<>();
    }

@Override
    public void enqueue(E e) {
array.addLast(e);
    }

@Override
    public E dequeue() {
return array.removeFirst();
    }

@Override
    public E getFront() {
return array.getFirst();
    }

@Override
    public int getSize() {
return array.getSize();
    }

@Override
    public boolean isEmpty() {
return array.isEmpty();
    }
public int getCapacity(){
return array.getCapacity();
    }
@Override
    public String toString(){
        StringBuilder res = new StringBuilder();
        res.append("Queue: front[");
        for (int i = 0; i < array.getSize(); i++) {
            res.append(array.get(i));
            if(i != getSize() - 1){
                res.append(',');
            }
        }
        res.append("] tail");
        return res.toString();
    }

public static void main(String[] args) {
        ArrayQueue<Integer> queue = new ArrayQueue<>();
        for (int i = 0; i < queue.getSize(); i++) {
            queue.enqueue(i);
            System.out.println(queue);
            if(i % 3 == 2){
                queue.dequeue();
                System.out.println(queue);
            }
        }
    }
}

D:\JDK\bin\java.exe "-javaagent:D:\idea\IntelliJ IDEA 2020.2.2\lib\idea_rt.jar=59077:D:\idea\IntelliJ IDEA 2020.2.2\bin" -Dfile.encoding=UTF-8 -classpath F:\Arithmetic\ArithmeticStudy\out\production\ArithmeticStudy;C:\Users\werey\.m2\repository\org\junit\jupiter\junit-jupiter\5.4.2\junit-jupiter-5.4.2.jar;C:\Users\werey\.m2\repository\org\junit\jupiter\junit-jupiter-api\5.4.2\junit-jupiter-api-5.4.2.jar;C:\Users\werey\.m2\repository\org\apiguardian\apiguardian-api\1.0.0\apiguardian-api-1.0.0.jar;C:\Users\werey\.m2\repository\org\opentest4j\opentest4j\1.1.1\opentest4j-1.1.1.jar;C:\Users\werey\.m2\repository\org\junit\platform\junit-platform-commons\1.4.2\junit-platform-commons-1.4.2.jar;C:\Users\werey\.m2\repository\org\junit\jupiter\junit-jupiter-params\5.4.2\junit-jupiter-params-5.4.2.jar;C:\Users\werey\.m2\repository\org\junit\jupiter\junit-jupiter-engine\5.4.2\junit-jupiter-engine-5.4.2.jar;C:\Users\werey\.m2\repository\org\junit\platform\junit-platform-engine\1.4.2\junit-platform-engine-1.4.2.jar qurue.ArrayQueue

Process finished with exit code 0

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