The Apache Commons Lang library could help you to determine the running OS type. Here is an simple example.

pom.xml

...
<dependency>
  <groupId>org.apache.commons</groupId>
  <artifactId>commons-lang3</artifactId>
  <version>3.1</version>
</dependency>
...

So now you could determine the OS by

...
import org.apache.commons.lang3.SystemUtils;
...

if (SystemUtils.IS_OS_WINDOWS) {
  System.out.println("This is a WINDOWS OS.");
} else if (SystemUtils.IS_OS_MAC) {
  System.out.println("This is a MAC OS.");
} else if (SystemUtils.IS_OS_LINUX) {
  System.out.println("This is a LINUX OS.");
} else {
  System.out.println("This is a SPECIAL OS.");
}
...

Done =)

Reference:

• StackOverflow – How to detect Windows or Linux?
• StackOverflow – How do I programmatically determine operating system in Java?
• Java API – Class SystemUtils