question: void readCNT ( ) throws IOException { int [ ] header = new int [ 1 ] ; while ( true ) { String S = isr . readLine ( ) ; if ( S == null ) break ; parseString ( S , header , 10 ) ; int n = header [ 0 ] ; if ( n == - 1 ) break ; for ( int i = 0 ; i < n ; i ++ ) isr . readLine ( ) ; } }
target:  read CNT records (in fact does nothing)