java-webclient-proxy.java

import org.apache.cxf.configuration.jsse.TLSClientParameters;
import org.apache.cxf.helpers.IOUtils;
import org.apache.cxf.jaxrs.client.WebClient;
import org.apache.cxf.transport.http.HTTPConduit;
import org.apache.cxf.transports.http.configuration.HTTPClientPolicy;

...

WebClient  client = WebClient.create(uri);

// Add proxy
HTTPConduit conduit = WebClient.getConfig(client).getHttpConduit();

HTTPClientPolicy policy = new HTTPClientPolicy();
policy.setProxyServer("someproxy.com.sg");
policy.setProxyServerPort(3128);
conduit.setClient(policy);

// accept json response
client.accept(MediaType.APPLICATION_JSON);

// do actual calling to http://google.com
final Response response = client.get();