java - How to integrate a splash screen activity and an app -

i have made app school project,i want know how integrate 2 things in one?a splash screen app.

create splash screen activity achieve it

import android.app.activity; import android.content.intent; import android.os.bundle; import android.os.handler;  public class splashscreen extends activity {  // splash screen timer private static int splash_time_out = 3000;  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_splash);      new handler().postdelayed(new runnable() {          /*          * showing splash screen timer. useful when          * want show case app logo / company          */          @override         public void run() {             // method executed once timer on             // start app main activity             intent = new intent(splashscreen.this, mainactivity.class);             startactivity(i);              // close activity             finish();         }     }, splash_time_out); // replace splash_time_out amount of milliseconds }  }