IDEA自动补全

1.var 声明

"a".var ==>final String name = "a"

20.var ==>final int i = 20;

new persion().var ==>final Persion persion = new Persion();

2.null 判断

  user.null ==> if(user == null)

3.非空判断

user.notnull ==> if(user != null)

4.nn判断非空

user.nn ==>if(user != null)

5.for 遍历

List<String> list = Arrays.asList("a","b","c");

输入list.for ==>for(string str:list)

6.fori 带索引的遍历

List<String> list = Arrays.asList("a","b","c");

输入 list.fori ==> for(int i=0;i<list.size();i++)

7.not 取反

boolean isSuccess = false;

输入  isSuccess.not ==>!isSuccess

8.if条件判断

 输入 args.length>0.if ==>if(args.length>0)

 

9.cast 强转

Object name = "a";

name.cast ==>(String) name

 

10.return返回值

输入 "abc".return ==>return "abc";