URLProcessor.java

public interface URLProcessor {

    public void process(URL url) throws IOException;

public abstract class URLProcessorBase implements URLProcessor {

    public void process(URL url) throws IOException {
        URLConnection urlConnection = url.openConnection();
        InputStream input = urlConnection.getInputStream();

        try{
            processURLData(input);
        } finally {
            input.close();
        }
    }

    protected abstract void processURLData(InputStream input)
        throws IOException;

}

public class URLProcessorImpl extends URLProcessorBase {

    @Override
    protected void processURLData(InputStream input) throws IOException {
        int data = input.read();
        while(data != -1){
            System.out.println((char) data);
            data = input.read();
        }
    }
}
public static void main(String[] args){
  URLProcessor urlProcessor = new URLProcessorImpl();

  urlProcessor.process(new URL("http://gitbhub.com"));

}
}