list集合.add
时间: 2023-10-12 18:56:47 浏览: 42
list集合.add方法是用来向列表中添加单个元素的。例如,可以使用list.add("element")来将一个元素添加到list集合的末尾。\[1\]
引用\[1\]: 二、addAll方法,有2种重载方法 1、boolean addAll(Collection<? extends String> c:在集合末尾可以一次性插入一个集合 List<String> list = new ArrayList<String>(); list.add("小汪"); list.add("小王"); list.add("小旺"); list.add(""); list.add(null); List<String> listObj = new ArrayList<String>(); listObj.addAll(list); for (int i = 0; i < listObj.size(); i++) { System.out.println(listObj.indexOf(listObj.get(i))+"----"+listObj.get(i)); } \[1\]
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