Registering a listener for changes in network connections and proxy from eclipse preferences

import org.eclipse.core.net.proxy.IProxyChangeEvent;

import org.eclipse.core.net.proxy.IProxyChangeListener;

import org.eclipse.core.net.proxy.IProxyService;

import org.osgi.util.tracker.ServiceTracker;

public class ProxyHelper

{

public void registerListener()

{

ServiceTracker tracker = new ServiceTracker(MyPlugin.getDefault().getBundle().getBundleContext(),

IProxyService.class.getName(), null);

tracker.open();

IProxyService proxyService = (IProxyService) tracker.getService();

proxyService.addProxyChangeListener(new IProxyChangeListener()

{

@Override

public void proxyInfoChanged(IProxyChangeEvent event)

{

// TODO: your action for proxy changed

}

});

}

}