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Java Iterator next method?

polkadot
polkadot asked
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Last Modified: 2008-02-26
In 1.4.2


Iterator itr = ...;

itr.next() gets the next object and advances the iterator?  How do I get it so that it only advances when I want it to.

For instance I need to retrieve the value referenced by the iterator several times during this block of code.

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Top Expert 2006

Commented:
Some collection use ListIterator which enables previous() as well as next()
You can get the element with next() and then rewind it by previous()
Hi
Why don't you store the retrieved object?

Like this:

Object obj=itr.next();

//use obj from now on

obj.method1();

...

method2(obj)

It is recommanded that you do this way, the next() method has it's own overhead.

Best regards,
valipotor

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