publicstaticvoidremove13(List<String> list, String target){intsize = list.size();for(inti = size -1; i >=0; i--){ String item = list.get(i);if(target.equals(item)){ list.remove(item); } } print(list); } publicstaticvoidremove14(List<String> list, String target){for(inti =...
String item = list.get(i); if(target.equals(item)){ list.remove(item); } } print(list); } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 正确做法4:通过 CopyOnWriteArrayList 解决 List的并发问题 public static void remove22(ArrayList<String> list, String target) { final CopyOnWriteArrayList<Stri...
通过双向链表(Doubly-linked)实现,实现了List和Deque接口,所以LinkedList可以作为List的使用,也可以作为Stack和Queue来使用。 作为List使用 结构 LinkedList中维护两个指向链表第一个节点和最后一个节点的指针。Node是一个私有内部类,Node类中存有值item,和两个指向上一结点和下一节点的指针。 整个LinkedList是由一个个N...
If a position is specified then this method returns the removed item. If a value is specified then it returns true if the value was found and false otherwise.If a value is specified and multiple elements in the list have the same value then only the first one is deleted....
if(item.equals("掘金")){platformList.remove(i);}}System.out.println(platformList);}这种实现方式...
Java program to remove an object from an ArrayList usingremove()method. In the following example, we invoke theremove()method two times. If the element is found in the list, then the first occurrence of the item is removed from the list. ...
printCollection(strList); } 输出如下,也就是说,ListIterator.remove是依赖于迭代器的状态的,每次调用remove之前,必须先调用一次next或者previous函数。 init content: collection content: item:1item:2item:3after remove1item collection content: item:2item:3Exception in thread"main"java.lang.IllegalStateExcept...
For demo purposes, the following Java program has a list of strings. The string “C” is present 2 times in the list. The other strings appear once in the list. When we want to remove all occurrences of a single element, we wrap the element into a collection using the Collection.single...
remove 元素请使用 Iterator方式,如果并发操作,需要对 Iterator 对象加锁。...另可参考: list.remove()时出问题,集合的remove方法注意事项1 正例: List list = new ArrayList();...)) { String item = iterator.next(); if (删除元素的条件) { iterator.remove...反例: for (String item : list) { ...
它在iterator.remove()行中抛出了java.lang.IllegalStateException错误。我不知道该怎么做,但它似乎不允许我在迭代时删除这些项。 public ArrayList<Rocket> loadU2(ArrayList<Item> loadItems){ //list of ships ArrayList<Rocket> U2Ships = new ArrayList<Rocket>(); ...