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The moose likes Programmer Certification (SCJP/OCPJP) and the fly likes Collections Big Moose Saloon
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Bookmark "Collections" Watch "Collections" New topic



Joined: Oct 11, 2000
Posts: 2
I had a question related to Collections Topic.I want to know upto what extent one has to study this topic for the programmer exam.I am referring to books by Khalid Moghul and Barry Boone.
The topic seems so vast...
Ajith Kallambella

Joined: Mar 17, 2000
Posts: 5782
zThe questions are usually about the following -

  • The Collection class hierarcy - the interfaces, the objects, the implementations etc.
  • Which are thread-safe collections and which are not.
  • Which are sortable collections and which are not.
  • Which can take null values and which cannot.
  • When can you add non-unique keys and when you cannot.
  • If you are given a situation (storing/retrieving objects using a collection ), and a set of Collection classes to choose from, can you make the correct choice?
  • The syntax and the behaviour of various adding/searching/seeking/deleting objects to a collection.
  • Ability to identify compile time/runtime errors in a program that uses collections.
  • Convert from one collection to another using bulk-retrieval and bulk-add methods.

  • That's pretty much about it.
    Good luck,

Open Group Certified Distinguished IT Architect. Open Group Certified Master IT Architect. Sun Certified Architect (SCEA).

Joined: Oct 11, 2000
Posts: 2
Thanks a lot Ajit.
That was really helpful.
Any other suggestions,last minute referral notes etc regarding the java exam?
I'm planning to give the exam in the first week of november.
Anbooo Sanygao
Ranch Hand

Joined: Oct 04, 2000
Posts: 45
Just go to this site and try to give as much as mock exams possible.
whenever u get bored or feel tired then for easy practice play the rules roundup in javaranch site.
Good luck
I agree. Here's the link:
subject: Collections
jQuery in Action, 3rd edition