title: Get random value without creating `Random` object
body: <p>I'm writing a class constructor with a decimal field, that is need to be initialized by a random value. Just one little field and I need to create new <code>Random</code> object. In the first place it looks cumbersome, and in the second there is can arise a lot of equal values, in case of creating a lot of objects in one time slice (<code>new Random()</code> is euqal to <code>new Random(System.currentTimeMillis())</code>, and equal timeMillis entails equal random values).</p>
  
  <p>What is the best way to avoid this?</p>