How can you retrieve what OS your running in Java

Question

I am trying to write some logic based on the OS I am on. Is there a way Java enables you to find our what OS you are running. Some kind of method?
Thanks

Answer 1

Check out the class java.lang.System and look at the javadoc for its method getProperties().
Properties sysProps = System.getProperties();
Enumeration sysPropsKeys = sysProps.propertyNames();
while (sysPropsKeys.hasMoreElements())
String key = (String) sysPropsKeys.nextElement();
System.out.println(key + ": " + (String) sysProps.getProperty(key));