idea 自动代码补全指令

绝地灬酷狼 2024-04-19 13:04 84阅读 0赞

IDEA 有个很牛逼的功能，那就是后缀补全（不是自动补全），很多人竟然不知道这个操作，还在手动敲代码。

这个功能可以使用代码补全来模板式地补全语句，如遍历循环语句（for、foreach）、使用 String.format() 包裹一个字符串、使用类型转化包裹一个表达式、根据判（非）空或者其它判别语句生成 if 语句、用 instanceOf 生成分支判断语句等。

使用的方式也很简单，就是在一个表达式后按下点号 . ，然后输入一些提示或者在列表中选择一个候选项，常见的候选项下面会给出 GIF 演示。

**1、var 声明**

## ##

![format_png][]

**2、null 判空**

![format_png 1][]

## ##

**3、notnull 判非空**

![format_png 2][]

## ##

**4、nn 判非空**

## ##

![format_png 3][]

## ##

**5、for 遍历**

![format_png 4][]

## ##

**6、fori 带索引的遍历**

## ##

![format_png 5][]

## ##

**7、not 取反**

## ##

![format_png 6][]

## ##

**8、if 条件判断**

## ##

![format_png 7][]

## ##

**9、cast 强转**

## ##

![format_png 8][]

## ##

**10、return 返回值**

## ##

![format_png 9][]

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