I am looking for a way to configure the freebase java api to connect to [freebase](http://www.freebase.com/) through a proxy. I have set up sytem properties 

```
System.setProperty("http.proxyHost", "proxy"); 
System.setProperty("http.proxyPort", "8080");
System.setProperty("http.proxySet", "true"); 

```

but it doesn't have any effect. Could anybody help?