Java tutorial
//package com.java2s; import android.content.Context; import android.content.Intent; import android.content.pm.PackageManager; public class Main { public static void openApp(Context context) { PackageManager packageManager = context.getPackageManager(); Intent intent = packageManager.getLaunchIntentForPackage("com.hulaoo"); if (intent == null) { System.out.println("APP not found!"); } context.startActivity(intent); } }