Java tutorial
//package com.java2s; import java.io.IOException; import java.io.InputStreamReader; public class Main { public static boolean hasRoot() { char[] arrayOfChar = new char[1024]; try { int j = new InputStreamReader(Runtime.getRuntime().exec("su -c ls").getErrorStream()).read(arrayOfChar); if (j == -1) { return true; } } catch (IOException e) { } return false; } }