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Exam scope for string methods?

 
Winston Liek
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What methods are included in the exam? And also for string builder and array list?

Because there are so many methods, constructors accdg to docs.oracle.

I read from Mala Gupta's book that study only 8 methods (charAt, indexOf, substring etc) . But not sure if I still need to study other methods?
 
Roel De Nijs
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