question: public static String readStringAndClose ( Reader in , int length ) throws IOException { try { if ( length <= 0 ) { length = Integer . MAX_VALUE ; } int block = Math . min ( Constants . IO_BUFFER_SIZE , length ) ; StringWriter out = new StringWriter ( block ) ; copyAndCloseInput ( in , out , length ) ; return out . toString ( ) ; } finally { in . close ( ) ; } }
target:  Read a number of characters from a reader and close it.