title: Double minus operation result
body: <p>I have a stupid question : </p>
  
  <pre><code>String str0 = "245.00";
  String str1 = "45.00";
  Double str3 = Double.parseDouble(str0) - Double.parseDouble(str1); 
  System.out.println(str3); =====&gt; 200.0
  </code></pre>
  
  <p>Why it don't gives 200.00? (tested with Float too) And how to control number of digits after the comma?</p>