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Yazeed Hamdan
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hi
the ocp book mention that

The exam expects you to know about common predefined collectors in
addition to being able to write your own by passing a supplier, accumulator,
and combiner.

but it didn't mention the common predefined collectors
i search for them and find a too many collectors but didn't know who's the common in use that the exam expect us to know
so pleas could you write them here or give us a reference to take them form.
 
Jeanne Boyarsky
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That quote is on page 196 of my book. The common collectors you need to know are covered later in the chapter. Page 217-223 in particular.
 
Yazeed Hamdan
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Thank you very much
 
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