ArrayList與LinkedList一樣，下面以ArrayList為例

ArrayList<String> arrayList = new ArrayList();
        arrayList.add("a");
        arrayList.add("a");
        arrayList.add("b");
        arrayList.add("c");

        for(int i = 0; i < arrayList.size(); i++){
            if(arrayList.get(i).equals("a")){
                arrayList.remove(i);
            }
        }

        for(String str : arrayList){
            System.out.print(str + "\t");
        }

        //java.util.ConcurrentModificationException
        /*for(String str : arrayList){
            if(str.equals("a")){
                arrayList.remove(str);
            }
        }*/

        System.out.println();
        arrayList.add(0,"a");
        Iterator<String> iterator = arrayList.iterator();
        while (iterator.hasNext()){
            if(iterator.next().equals("a")){
                iterator.remove();
            }
        }

        for(String str : arrayList){
            System.out.print(str + "\t");
        }
 

a	b	c	
b	c