从
http://java.sun.com/developer/technicalArticles/J2SE/security/#3：
Note: These two system properties are
ignored when applications run on
operating systems that do not yet
support this feature,for example,MS
Windows.
那个文件是从2006年开始的,所以事情可能已经改变了,但是我没有找到一个确定的答案.
解决方法
不
47 static {
48 USE_NATIVE =
49 AccessController.doPrivileged(new PrivilegedAction<Boolean>() {
50 public Boolean run() {
51 String osname = System.getProperty("os.name");
52 if (osname.startsWith("SunOS") ||
53 osname.startsWith("Linux")) {
54 return new Boolean(System.getProperty
55 (USE_NATIVE_PROP));
56 }
57 return Boolean.FALSE;
58 }
59 });
60
