JVM Parameter -Dhttp.nonProxyHosts does not seem to work

Hi there, Does anyone use JVM Parameter "nonProxyHosts "? I am trying to configure JVM Parameter as follows.  -Dhttp.proxyHost=hostname -Dhttp.proxyPort=8080 -Dhttp.nonProxyHosts=localhost|nonproxyhostname When I call REST Services located in outside the proxy, it works. but When I call REST Services located in nonProxyHost, it doesn't work. I think  -Dhttp.nonProxyHosts does not seem to work.. Can anyone tell me what is the issue behind this? Thanks in adbvance!