In Java, we can see the property value of os.name
to know the name of the underlying operating system: System.getProperty("os.name")
.
For each edition of Windows, it used to return always the exact name of the OS: Windows XP
for XP, Windows Vista
for Vista, Windows 7
for Seven, Windows 8.1
for 8.1, and so on...
The problem is: I just updated my Windows 8.1 to Windows 10 using the released Microsoft updater, and it seems like this property still remains Windows 8.1
:
public class OSTest {
public static void main(String[] args) {
System.out.println(System.getProperty("os.name"));
}
}
How can I create a workaround for this? And, does anyone know if this problem persists if installing a fresh Windows 10 copy - that is, this bug is caused by the Microsoft auto-updater -?
This is a known problem JDK-8066504 that has been fixed in upcoming Java 8 update 60.
The reason is GetVersionEx function has changed its behavior since Windows 8.1.
There are multiple possible workarounds, see MSDN article.
The trivial one is to exec cmd.exe /c ver
.
The other is to look at the version information of one of the system files, e.g. kernel32.dll
.