title: parseDouble in Java results to NumberFormatException
body: <p>I am trying to load info from a properties file and i have the following code:</p>
  
  <pre><code>anInt = Integer.parseInt(prop.getProperty("anInt"));
  aDouble = Double.parseDouble(prop.getProperty("aDouble"));
  </code></pre>
  
  <p>and while the first line works just fine, the second one where i am trying
  to load a double variable throws a <code>NumberFormatException</code>. The specific exception message is:</p>
  
  <pre><code>Exception in thread "main" java.lang.NumberFormatException: For input string: "78,5"
  at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1222)
  at java.lang.Double.parseDouble(Double.java:510)
  at Assignment1.BaseStation.readPropertyFile(BaseStation.java:59)
  at Assignment1.BaseStation.main(BaseStation.java:83)
  </code></pre>