public interface NetListener { public boolean checkNet(NetEvent ne); }
public class NetEvent extends AWTEvent { public NetEvent(Object o, int id) { super(o, id); } public boolean hasNet() { boolean bNet; try { URL url = new URL("http://www.xyz.de"); URLConnection con = url.openConnection(); bNet = con != null; con.close(); } catch (Exception e) { bNet = false; } return bNet; } }