Lucas Moraes

wow, 91% on OCPJP exam? congrats on the high score! even more for not being your specialty! I just did the exam last friday(18th) and passed with 80%, and just like you said Enthuware for sure was key to my success.

Hi everyone, today I passed the exam 1Z0-804 with a score of 80%, and I know this forum is full of similar posts but I couldn't hold myself and hey! thats what this section is all about right? to share exam results?

So, to prepare I read the only OCPJP 7 book available at the moment, "Oracle Certified Professional Java SE 7 Programmer Exams 1Z0-804 and 1Z0-805: A Comprehensive OCPJP 7 Certification Guide" from S.G Ganesh and Tushar Sharma, the SCJP 6 book from Kate Sierra & Bert Bates and bought Enthuware correlated mock exam.

All in all, the book is good, it explains well many things, even though part of it I skipped because already knew/ had seem on the SCJP 6 Book I owned prior to buying this one, but there were some details I discovered only through mock tests or programming myself which is ok I guess , it's not like every single detail would fit in one book anyway.

Now, Enthuware as always is the must-have item here, the questions are spot-on and the dificulty is much more on par with the real thing in this version compared to the OCA version, being I did an average 75% on the Practice tests and ended up with 80% on the exam, not counting I did study one more week after I did the Last Practice test.

About the Exam Questions, it didn't felt hard at at all, save for some questions that made me question myself, but other than that it felt just like I was doing another practice test from Enthuware, no big deal.

Also, speaking of questions, there were two questions about Thread behaviour that draw my attention because it was a type of question I didn't saw on enthuware s/w but nothing hard really, just asking the most probable result based on two threads running at the same time, just like another question from enthuware , but instead of asking what would happen, it was asking what was most probable to happen.

Is the question really that difficult? or I didn't explained clear enough?

Yes, for OCPJP 7 you need the OCAJP 7 first(if I recall correctly for other versions you should write the upgrade exam), although you can do in any order, you can do the OCA first or the OCP first, but you must have both to receive the OCP certificate.

Hi everybody, I'm currently studying for the OCPJP 7 and I'm programming some JDBC classes, It was all ok until I found this strange bug and want to know why is this happening.

The situation is as follows:

I have this class TestRowSet.java:

package com.lucas.jdbc; import java.sql.*; import javax.sql.*; import javax.sql.rowset.*; public class TestRowSet{ public static void main(String...args){ try(JdbcRowSet row = RowSetProvider.newFactory().createJdbcRowSet();){ row.setUrl("jdbc:mysql://localhost:3306/school"); row.setUsername("root"); row.setPassword("*****"); row.setAutoCommit(false); row.setCommand("select * from Student "); row.execute(); row.moveToInsertRow(); row.updateString("student_name",args[0]); row.updateInt("score",Integer.parseInt(args[1])); row.insertRow(); row.moveToInsertRow(); row.updateString("student_name","JDBC RowSet"); row.updateInt("score",100); row.insertRow(); row.commit(); row.first(); //NullPointer while(row.next()){ System.out.println("Student: "+row.getString("student_name")+" || Score: "+row.getInt("score")); } }catch(Exception e){e.printStackTrace();} } }

but I'm getting a nullpointer when the code reaches row.first() method, and if I remove this line the nullpointer is at row.next() instead, as if there is no resultset object anymore after the commit method.

if I remove the row.commit method, the code prints fine(only doesn't save anything on the database) , and strangest yet is that I have a similar class using the plain old ResultSet instead:

package com.lucas.jdbc; import java.sql.*; import javax.sql.*; public class InsertData{ public static void main(String...args){ ResultSet rs = null; try(Connection c = DriverManager.getConnection("jdbc:mysql://localhost:3306/school","root","****"); Statement stm = c.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE); ){ c.setAutoCommit(false); String name = args[0]; int score = Integer.parseInt(args[1]); rs = stm.executeQuery("select * from student"); rs.moveToInsertRow(); rs.updateString("student_name",name); rs.updateInt("score",score); rs.insertRow(); rs.moveToInsertRow(); rs.updateString("student_name","Java"); rs.updateInt("score",95); rs.insertRow(); c.commit(); while(rs.next()){ System.out.println("Student: "+rs.getString("student_name")+" | "+rs.getInt("score")); } }catch(Exception e){ e.printStackTrace(); }finally{ try{ rs.close(); }catch(Exception e){e.printStackTrace();} } } }

But this class runs fine, so I'm wondering, what is wrong in the rowset class? is there any difference between Connection.commit() and JdbcRowSet.commit()?

according to the publisher site, this book will be released the december 26,2014.

I wonder why this book delayed so much. I'm in the same situation as yours having passed the OCA this month, I wanted to get the new Sierra book but when I saw it was already saying the release date would be in december, only I don't remember being only in 2014... now I have already ordered Ganesh book from Amazon and I'm only waiting for them to deliver.

Some tips I read in the SCJP 6 book by Bates and Sierra :

1. If you notice a question is taking too much time, choose the option you find the most correct , mark the question for revision and skip to the next one.
strike
2. if you are in doubt about 2 or 3 options, make notes in a paper just so you don't lose your line of though when revising the question.

Now, when the book was written the test software was other, nowadays you can strike the wrong options by right-clicking them as the software will tell you, so in tip 2 you can also strike the wrong options before skipping the question.

Hi, last week I passed the OCAJP 7 with a score of 96%, I prepared myself using the SCJP 6 study Guide from Kathy Sierra and Bert Bates and Enthuware's software.

I read the entire book and later went over an entire month doing Enthuware's mock exams , until I passed all the mock tests with an average of 85%.

The exam was easier than the mock tests, but had some very similar questions.

Now I will rest a little and then onwards to OCPJP 7.

Just saw the objectives comparison here at coderanch and you may be right James, there's a lot more topics in the new exam, and would take me a while to hunt them all over the internet, and I wouldn't have the tips they normally include in those study books. So I might as well use my old book for the objectives covered in it( I like Sierra & Bates explanation style) and for the rest use a OCPJP 7 book.

I would like to hear more opinions, but I guess my question was answered, so the mods can lock the topic if they want.

I read at Amazon the topics covered in the book Nancy indicated , and I'm pending towards use my SCJP 6 book until I got right every topic it covers , and then search the other topics, complementing later with a mock exam. Is this a good idea, or if not why its better to go through a proper OCPJP 7 book?

Ok, Nancy I'll check this book, but I want to know, is it worth it when I already have a study book (albeit a SCJP 6 one)?

I'm trying to make my mind about buying a new book or using my SCJP 6 book and later searching the topics not covered in it.

Hi Everyone, I just passed the OCA for Java 7 and I'm thinking in getting the OCPJP before the end of the year.

I already have the SCJP 6 study guide from Sierra & Bates, and I'm planning on getting Enthuware simulator too, but I'm thinking, is the SCJP 6 book + some study over the internet enough for the test or is
it recommended to buy a OCPJP 7 book? if it is, which one do you guys recommend?

hum, I have a problem with saying objects are passed by reference. Although in practice it is true, accordingly to Kathy Sierra and Bert Bates in the SCJP 6 Study Guide, everything is passed by value in Java, it's just that the "value" of a reference variable would be the reference to the object.