question: public void test_getPutByteArrayWithOffsetAndLength ( ) { final int size = 200 ; final IDataRecord buf = new FixedByteArrayBuffer ( size ) ; assertEquals ( ( byte ) 0 , buf . getByte ( 0 ) ) ; assertEquals ( ( byte ) 0 , buf . getByte ( size - 1 ) ) ; final int pos = 1 ; for ( int i = 0 ; i < LIMIT ; i ++ ) { final byte [ ] expected = new byte [ r . nextInt ( size - 2 ) ] ; final int off = ( expected . length / 2 == 0 ? 0 : r . nextInt ( expected . length / 2 ) ) ; final int len = ( expected . length == 0 ? 0 : r . nextInt ( expected . length - off ) ) ; r . nextBytes ( expected ) ; buf . put ( pos , expected , off , len ) ; assertEquals ( 0 , BytesUtil . compareBytesWithLenAndOffset ( off , len , expected , pos , len , buf . array ( ) ) ) ; final int dstoff = r . nextInt ( 10 ) ; final byte [ ] actual = new byte [ expected . length + dstoff ] ; buf . get ( pos , actual , dstoff , expected . length ) ; assertEquals ( 0 , BytesUtil . compareBytesWithLenAndOffset ( off , len , expected , dstoff , len , actual ) ) ; } assertEquals ( ( byte ) 0 , buf . getByte ( 0 ) ) ; assertEquals ( ( byte ) 0 , buf . getByte ( pos + size - 2 ) ) ; }
target:  Test of the bulk get/put byte[] methods which accept a slice into the caller's array.