Java OutputStream copy from InputStream

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class Main {
  /**/* w w  w.ja  va 2  s  . c  o m*/
   * Copy in stream to an out stream
   *
   * @param in
   * @param out
   * @throws IOException
   */
  public static void copyInputStream(InputStream in, OutputStream out) throws IOException {
      byte[] buffer = new byte[1024];
      int len = in.read(buffer);
      while (len >= 0) {
          out.write(buffer, 0, len);
          len = in.read(buffer);
      }
      in.close();
      out.close();
  }
}