Java->queuing->Just put sleep.. why so so hard ? with the lack of co/contra-variance in type hinting Write proper code oop and comment->Most latest ide can see

Java->queuing->Just put sleep.. why so so hard ? with the lack of co/contra-variance in type hinting Write proper code oop and comment->Most latest ide can see it. Now php much okay with namespace.. only what i really wanted now is partial class.. Other no need..