Re: confusion of array clone() method


"Patricia Shanahan" <pats@xxxxxxx> wrote in message
news:4pXah.4189$ql2.3040@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
hyena wrote:

this statement does not agree on this example.

could someone shed some light on this? Thanks.

The key issue is what constitutes an array. Java does not really have
multidimensional arrays. tr_seq is an array whose elements are
references to arrays.

clone makes a new array whose elements point to the same arrays as the
original.

For any i from 0 to tt.length-1, tt[i] and tr_seq[i] are identical. They
are either both null, or are pointers to the same array. Changes to an
element of an array they both reference apply regardless of whether you
find that array through tr_seq or tt.

Patricia


Thanks Patricia, and the others. This explaination makes the idea clear to
me.

thanks!


.

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