📅  最后修改于: 2022-03-11 14:52:42.195000             🧑  作者: Mango
Objects.isNull(obj) //returns true if the object is null
Objects.nonNull(obj) //returns true if object is not-null
if(Objects.nonNull(foo) && foo.something()) // Uses short-circuit as well. No Null-pointer Exceptions are thrown.