Java tutorial
//package com.java2s; //License from project: Open Source License import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; public class Main { @Nullable public static Fragment getFragmentByTag(@NonNull FragmentManager fragmentManager, @NonNull String tag) { return fragmentManager.findFragmentByTag(tag); } }