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+package tachyon.client;%0A%0Aimport java.util.Random;%0A%0A/**%0A * Utilities class for Tachyon Client. All methods and variables are static. This class is thread%0A * safe.%0A */%0Apublic final class Utils %7B%0A  private static Random sRandom = new Random();%0A%0A  public static synchronized long getRandomNonNegativeLong() %7B%0A    return Math.abs(sRandom.nextLong());%0A  %7D%0A%0A  // Prevent instantiation%0A  private Utils() %7B%7D%0A%7D%0A

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