List
List list = new ArrayList();
List:可以操作下标
增:
list.add(“java”);
list.add(0,”php”);
删
list.remove(0);
list.remove(“java”);
list.remove(list);
list.clear();
改
list.set(0,”python”);
查
可以实现双向遍历:
ListIterator itor = list.listIterator();
从左往右:
while(itor.hasNext()){
Object obj = itor.next();
sysout(obj);
}
从右往左:
while(itor.hasPrevious()){
Object obj = itor.previous();
sysout(obj);
}
其他
List sub = list.subList(1,3);从一到三子串,不算3位置
list.get(0);