FULL PRODUCT VERSION :
java version "1.6.0_10"
Java(TM) SE Runtime Environment (build 1.6.0_10-b33)
Java HotSpot(TM) Client VM (build 11.0-b15, mixed mode, sharing)

java version "1.7.0-ea-fastdebug"
Java(TM) SE Runtime Environment (build 1.7.0-ea-fastdebug-b58)
Java HotSpot(TM) Client VM (build 16.0-b02-fastdebug, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
Windows XP 64-Bit
Microsoft Windows [Version 5.2.3790]


EXTRA RELEVANT SYSTEM CONFIGURATION :
there should be more than 4G of RAM

A DESCRIPTION OF THE PROBLEM :
Such properties of com.sun.management.OperatingSystemMXBean as
  TotalSwapSpaceSize
FreeSwapSpaceSize
  TotalPhysicalMemorySize
FreePhysicalMemorySize
have incorrect values (namely 4294967295 = 0xffffffff) when there is 32bit jre and there are more than 4G of RAM.
Note: 64bit jre shows correct values.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
something like
  TotalSwapSpaceSize 364c45000
FreeSwapSpaceSize 2e28f6000
  TotalPhysicalMemorySize 1ffecf000
FreePhysicalMemorySize 168295000

ACTUAL -
  TotalSwapSpaceSize ffffffff
FreeSwapSpaceSize ffffffff
  TotalPhysicalMemorySize ffffffff
FreePhysicalMemorySize ffffffff


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.lang.management.ManagementFactory;
import com.sun.management.OperatingSystemMXBean;

public class Main {
public static void main(String... args) {
OperatingSystemMXBean bean = (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();
System.out.println("TotalSwapSpaceSize " + Long.toHexString(bean.getTotalSwapSpaceSize()));
System.out.println("FreeSwapSpaceSize " + Long.toHexString(bean.getFreeSwapSpaceSize()));
System.out.println("TotalPhysicalMemorySize " + Long.toHexString(bean.getTotalPhysicalMemorySize()));
System.out.println("FreePhysicalMemorySize " + Long.toHexString(bean.getFreePhysicalMemorySize()));
}
}

---------- END SOURCE ----------