more Java masterpieces

[juan_gandhi]

public class Streams {

  /**
   * Drains the contents of a stream without blocking on further input from that stream.
   *
   * @param stream the stream to drain
   * @return the contents of the drained stream
   */
  public static String drainStream(OutputStream stream) {
    if (stream == null) {
      return null;
    }
    
    if (stream instanceof CircularOutputStream) {
      return stream.toString();
    }
    
    return null;
  }
}