SCJP 1.5 EXAMS

1)Generics(53 Questions)
2)Enums(25 Questions)
3)Variable Arguments(23 Questions)
4)Java IO Package(25 Questions)
5)Boxing Conversions(20 Questions)
6)Misc. New API’s (String Builder, Scanner, Formatter)(15 Questions)
7)Language Changes (enhanced for loop, static imports)(22 Questions)
Chapterwise Practise Questions
1)Objectives – 1
2)Objectives – 2
3)Objectives – 3
4)Objectives – 4
5)Objectives – 5
6)Objectives – 6
7)Objectives – 7
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SCJP 1.5 Tips from Real Exam Takers
Originaly posted by Srimadhava Reddy here :

http://tech.groups.yahoo.com/group/JavaBeat_SCJP/message/5650

1. Kathy Sierra & Bert Bates is the best book for this exam.
2. Read the book 2 or 3 times & Clearly understand the topic and do all the questions given in this book at end of each chapter.
3. Clearly understand the rules for overloading and overriding.
4. Get familiar with the API for Date, Calender, Locale, DateFormat, String, StringBUffer & StringBuilder.
5. Write Simple programs to make it clear for Regular expressions & Static imports.
6. For I/o, Serialization follow the steps. Like creation & worguide with directories, Storing and reading data to and from file, etc.
7. Clearly Understand how the boxing & unboxing is worguide.
8. Familier the API for Array & Collections classes.
9. Make it clear in var args and Conversions (Wrapper to primitive & vice versa)
10. In Collections Clearly understand how we can override hashCode and Equals methods. Familar the differences between all the Collection interfaces and Classes.
11. Threading, good book is ks&B one only. Read 2 or 3 times and do all questions given.

If You want to pass, that book is sufficient. For Generics & Collections, Enums & Var-args I followed the mock questions from java-beat. They are very good. Especillay for all new topics which are introduced for 5.0 they covered vey well. Mocks exams done by me:

1. Kathy Sierra & Bert Bates book questions + 2 mock exams (They are tough compared to real exam)
2. Mocks exam question from java-beat.
3. http://www.danchisholm.net/ (for all old topics).
4. http://faq.javaranch.com/view?ScjpMockTests (You can get some question from that).

Originaly posted by Devendra Thomre here :

http://forums.javabeat.net/index.php?topic=235.0

Following are some tips that i want to share with u all who are planning to give SCJP 1.5

Please master in rules of overriding and overloading , coz almost all the questions test ur knowledge of overloading and overriding

Make ur concept clear for boxing , unboxing, wrapper to primitive , primitive to wrapper .

Criteria for selecting appropriate overloaded method when there are 2-3 methods overloaded with Object, Primitive, Var args as an argument .

For file i/o, Serialization get thorough with steps , u will mostly get drag n drop questions on this section .

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String , string buffer , String builder get familiar with API Threading , Synchronization ? Generics and Collections — get thorough with Collection and Array API .HashCode and Equals overriding , Generics concept , Generic classes.

Special thanks to Javabeat.net’s mock up questions for this sections . The generics concept which is given in Kathy book is good but to get thorough with each and every syntax when u use generics we need some more material . There are many ways by which u can declare generics (with warning and without warning compilation ) and use it . And u need to understand it more critically since here we do have one more answer “compilation with warning or without warning” in the options given .

I suppose the material that I referred for this topic which was provided by javabeat.net mock up questions was really great , It not only helped to get generics concept clear but also boosted the confidence to play with generics questions .

Othere topics that I liked from this material was Enum , Var-args , Boxing unboxing and File I/0 .. Since these are new topics included in scjp 1.5 . we need to focus more on these new topics .(It is obvious that we should be good in other topics also but we can get so many questions on these old topics from hundred of sites ) By reffering questions which are given at the back of Kathy? book u can get exam cleared but if u want to get good score u have to go through different types of questions on these new topics . All The Best !!!!!!!! (for those Who all are planning to give SCJP 1.5
4) Which of the following statements hold true in the following program?

package generics;
import java.util.ArrayList;
import java.util.List;
public class Ques04 {
public static void main(String[] args) {
List< ? extends Instrument> allInstruments = new ArrayList();
// –>X
allInstruments.add(new Guitar());
allInstruments.add(new Violin());
}
}
interface Instrument {
public void play();
}
class Guitar implements Instrument {
public void play(){
System.out.println(“Playing Guitar.”);
}
}
class Violin implements Instrument {
public void play(){
System.out.println(“Playing Violin.”);
}
}

1. The program will not compile.
2. The program will compile but will throw run-time exception.
3. The statement ‘X’ manifests that objects of type Instrument as well as sub-types can be added to the list ‘allInstruments’.
4. It is not possible to add any type of objects to the list ‘allInstruments’.
5. The only possible element that can be added to the list ‘allInstruments’ is ‘null’.

Answer
4) 1,5.
The declaration ‘allInstruments’ manifests a list, whose reference can point to a similar declaration of list holding Instrument objects or sub-class of Instrument objects. It is not possible to add elements into the list ‘allInstruments’. The only permissible allowed type is ‘null’
more info:http://www.javabeat.net/javabeat/scjp5/index.php

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