error Http-500

[actitud]

es en la clase "class SocketInputStream extends FileInputStream" y especificamente en el metodo public int read(byte b[], int off, int length) , que lleva por comentario /**
* Reads into a byte array <i>b</i> at offset <i>off</i>,
* <i>length</i> bytes of data.
* @param b the buffer into which the data is read
* @param off the start offset of the data
* @param len the maximum number of bytes read
* @return the actual number of bytes read, -1 is
* returned when the end of the stream is reached.
* @exception IOException If an I/O error has occurred.
*/y el metodo public synchronized int read(byte b[], int off, int len) de la clase class BufferedInputStream extends FilterInputStream
.... ahora los import estan.... no se cual es el problema no logo visualizar... Gracias