如果您忘记了所需方法是什么名字，那么代码补全就十分有用，您不用再想到底是put还是add ？

Here code completion is especially useful if you've forgotten the name of the method you need: was it put or add ?

youdao

如果您忘记了所需方法是什么名字，那么代码补全就十分有用，您不用再想到底是put还是add ？

Here code completion is especially useful if you've forgotten the name of the method you need: was it put or add ?

youdao