Java tutorial
//package com.java2s; import android.support.annotation.NonNull; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; public class Main { public static void replaceFragment(@NonNull FragmentManager fragmentManager, @NonNull Fragment fragment, @NonNull String tag, @NonNull int fragment_content) { fragmentManager.beginTransaction().replace(fragment_content, fragment, tag).commit(); } }