java - 如何将元素集合添加到我的数组？

Question

我有一个方法可以将一组通用元素添加到我的数组中，但不知道如何实现它。我将遇到问题的代码行标记为 COLLECTION。我不知道该写什么来代替这个。我的阵列是一个圆环阵列。

import java.util.Collection;
import java.util.Iterator;

public class CircularArrayRing<E> implements Ring<E> {

    public E[] elements; //array of E

    private int capacity;
    private int writePos  = 0;
    private int available = 0;

    public CircularArrayRing(int size) {   //circular array constructor

        capacity = size;

    }


    public boolean add(E e) {

        if(available < capacity){ 
            if(writePos >= capacity){
                writePos = 0;
            }
            elements[writePos] = e;     //add element e
            writePos++;
            available--;
            return true;
        }

        return false;

    }

    public boolean addAll(Collection<? extends E> c) {

        if(available < capacity){
            if(writePos >= capacity){
                writePos = 0;
            }
            elements[writePos] = COLLECTION;    //how do add a collection of elements?
            writePos++;
            available++;
            return true;
        }

        return false;
    }
}

Answer 1

如何逐个迭代和触发 add()？

public boolean addAll(Collection<? extends E> c){
  for(E e : c){
    add(e);
  }
}