package java.net; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; public abstract class URLConnection { protected final URL url; protected URLConnection(URL url) { this.url = url; } public Object getContent() throws IOException { return getInputStream(); } public InputStream getInputStream() throws IOException { throw new UnknownServiceException(); } public OutputStream getOutputStream() throws IOException { throw new UnknownServiceException(); } }