Why do android studio show the following warnings while importing? -


the following imports in yellow no error thrown, clicking on them takes me respective class of support-annotations jar well:

import android.support.annotation.nonnull;  import android.support.annotation.nullable;

enter image description here

message on hover:

enter image description here

how can mark code inside android.support.annotation depricated, not code.

enter image description hereyellow lines these imported class signifies annotation class , default yellow in color , therefore there nothing wrong in coding .

import android.support.annotation.nonnull;

import android.support.annotation.nullable;


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