to know–and shows you how to prepare for this challenging SCJP Exam, including: Declarations SCJP Sun Certified Programmer for Java 6 Exam Kathy Sierra is a co-developer of the SCJP exam and Sun’s practice exam. Kathy sierra Pdf books – Free download as PDF File .pdf), Text File .txt) or read online for free. SCJP Java Thread Mock Exam Questions SCJP Dump. 5 Jul OCA/OCP Java SE7 Programmer I&II Study Guide(Exam 1Z & 1Z) by Kathy Sierra & Bert Bates: Library Genesis: Kathy Sierra, Bert Bates You are.
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Head First Java is a great book for starters. This thread appears to be about certification: Hi Divya There is a lot of difference between java1. C which means 2 objects is correct. I jus want to know which one of the two, headfirst java or scjp java 6 is good to start with. However, the compiler keeps a pool of small integers so instead of constructing them, it just points to the object already in the pool. If you already know java and are just planing for the exam – it doesn’t matter.
I’m not sure whats the difference between 1. That’s why you see the katuy “story” variables as being equal.
I like this book! If you’re not on the edge, you’re taking up too much room. Boot ] [ JavaChamp ] [ JavaPrepare ]. Sorry, perhaps ssierra english language isn’t too good. Hope this help, good luck! Spot false dilemmas now, ask me how! Assume that the code changed as below: I say that because too many times I found myself looking here and there trying to gather sierrx on basic concepts time wasted that a beginner book would have surely treated.
Sorry, my post was incorrect. I have a doubt about how many objects eligible for GC.
SCJP Sun Certified Programmer for Java 6 Study Guide
If you have programing back ground then direct start with scjp1. Hi Divya, I’ve got the very same objective like you. It will be immensely helpful. I think I found the answer for that problem. First of all, thank you for your attention!
Please help Cheers, Dhivyaa. Normally, instance variables like story would not be shared among instances, so when the containing object was eligible for garbage collection, then story would be as well.
Actually, those objects will never be garbage collected even if your program no longer has any references to them. I started with the Head First to refresh my java skills before starting to learn for the exam. Question about Garbage Collection.
The question was fixed a LONG time ago to read: How many objects are eligible for GC? Also concepts have been wonderfully dealt with in the book. In both of the above cases the key thing to remember is that the exam does NOT test you on your knowledge of any constant pools.
I think that to GTFC get the fine certification: I’d say it’s 4 objects – c3 and c1 are nulled out, so they are eligible, and two Strings created by new withing them – “String 2”, twice. SCJP java 6 or head first for java. They just stay in the pool ready to be reused. I think the author scip have missed that optimization when she said that there would be a Short eligible for garbage collection.
Is the commented out print line in the book, or is it your own addition? Well, i’m still not understand. Only one CardBoard object c1 is eligible, but it has an associated Short wrapper object that is also eligible.
SCJP Sun Certified Programmer for Java 6 Study Guide [Book]
If you are not at least a bit confident with the language it’s a very good choice to start from the beginning, headfirst Java. Couple of notes here: It gives you a good start for java syntax and object orientation.
Im bit confused because the second says “study guide”, though it is for java 5. It could have been a problem during the translation I’m using a pt-BR translation of that book. When a second CardBoard is instantiated – then it’s CardBoard and s2 that are created. My two cents hth, Bert. It depends on how much time do you have at your disposal AND how much you already know about Java.
If you don’t know java and are planing for the exam – Head First Java. If you already know Java then you probably don’t need HF Java to study for the exam.
I would like to know why the Short wrapper object in c1 is katby if c2. That’s safe because the wrapper classes are immutable. And it is very funny to read!