simple Java http loader with labmda-handlers

HTTPLoader.java

import java.net.*;
import java.io.*;

interface LambdaHandler {
  public void success( String response );
}

class XMLLoader implements Runnable {
  
  LambdaHandler handler;
  URL path;
  Thread runner;
  
  void load( String path, LambdaHandler handler ) throws Exception {
    this.handler = handler;
    this.path = new URL( path );
    runner = new Thread( this );
    runner.start();
  }
  
  public void run() {
    try {
      URLConnection connection = path.openConnection();
      BufferedReader input = new BufferedReader( new InputStreamReader( connection.getInputStream() ) );
      String inputLine;
      StringBuffer res = new StringBuffer();
      while ( ( inputLine = input.readLine() ) != null ) {
        res.append( inputLine + "\n" );
      }
      input.close();
      handler.success( res.toString() );
    } catch ( Exception e ) {
      
    }
  }
}