13 Free 1Z0-829 Exam Practice Questions for Java SE 17 Certification in 2024 (Mock Test)

Hello guys, if you are preparing for 1Z0-829 certification exam to become a Oracle certified Java SE 17 Developer in 2024 and looking for practice question for preparation then you have come to the right place. In this article, I am going to shared 13 Java SE 17 Practice question from my new Udemy course. It's been a long time since I released any course on Udemy and today, I am excited to announce the launch of my new course - Java SE 17 Mock Test for the 1Z0-829 Exam. I have been working on this course for a long time, ever since this exam was announced and if you follow me on Twitter then you know that as well. 

If you want to become a certified Java developer in 2024 then you can join this course on Udemy and prepare well to pass this prestigious exam and become Oracle Certified Java SE 17 developer in 2024.I have spent a lot of time making this course as best as possible to help prepare for this exam and learn Java better.

Here is what you will find in this course:

1. Five full-length test

2. 250+ questions with answers and explanations ( I also explained why certain options were not correct)

3. covers Java SE 17 syllabus

The best part of this course is that I have explained question and answer in bit detail which means when you review the question you incorrectly marked, you will not only learn why the correct answer is correct but also why the incorrect options are wrong.

This means you can not only use this test to check your actual preparation level but also to learn and fill gaps in your learning right before exam.

If you are aiming for Java SE 17 Certification in 2024, then you will undoubtedly love this course, and since you are reader of my blog or already purchased one of my courses, here is a special $9.9 coupon for you.

$9.9 coupon for  my readers - Join Java SE 17 Mock Test now for $9.9

Though, the coupon is only valid for 5 days and if you are interested in this course then you should join now and take full advantage of it as price is also going to increase soon

13 Java SE 17 Practice Question for 1Z0-829 Exam in 2024

When I was preparing for Java certification, I was looking for practice questions and mock test but I couldn't find anything other than this OCP Oracle Certified Professional Java SE 17 Developer Certification Kit: Exam 1Z0-829 excellent book of  Jeanne and Scott. 

That's why I decided to post few questions from my test for free and here we are where I will share 13 questions for 1Z0-829 exam from my latest Udemy course. 

And here are a sample question from the course for you to practice, if you know the answer, do let me know in comments:

Here is another Java SE 17 certification question based on Modules:

And, one more from modules to test your knowledge:

and, here is the fourth  question form Lambdas and Stream for you:

And, here is another question from Lambda and Stream to test your skill:

And, here is one question from Text Block, which was there from a long time but official available in Java SE 17

and now, let's see the 7th question from my practice test for Java SE 17 exam, if you know the answer post in comments.

And, now is the time for 8th question, again, if you know the correct answer, just put in comments:

And, now let's see 9th question from Java collection framework:

And, here is the 10th question on this list of Java SE 17 Certification and 1Z0-829 exam:

11. Select statements that are true about arrays and collections in Java?

1. ArrayList and Vector are thread safe.
2. Set can have duplicate elements.
3. Hashtable is thread safe
4. HashMap can have null as a key..

Overall explanation

1st is false because arraylist is not thread-safe, 2nd is false because set contains unique elements only, 3rd- hashtables are synchronized that's why thread safe, 4th- hashmap allows when key is null, 5th- hashmap does not keep order of added items. https://docs.oracle.com/en/java/javase/17/core/creating-immutable-lists-sets-and-maps.html

12.Consider the code below: does it accept duplicates? If yes then how can we fix it? (Select only one statement)

    public class Item {

        public String name;

        public int id;

        public Item(String name, int id) {

            this.name = name;

            this.id = id;

        }

        @Override

        public boolean equals(Object o) {

            if (this == o) return true;

            if (o == null || getClass() != o.getClass()) return false;

            Item item = (Item) o;

            return false;

        }

        @Override

        public int hashCode() {

            return Objects.hash(1);

        }

    }

…in main method

            Set<Item> set = new HashSet<>();

            set.add(new Item("Item", 1));

            set.add(new Item("Item", 1));

Set it will not accept duplicates.

1. code will not compile.
2. equals must be fixed.
3. hashCode must be fixed.
4. Set uses its own equals and hashCode methods to identify duplicates.

Overall explanation

3rd option is correct, equals method needs to be refactored. Instead of returning false there must be such code:

return id == item.id && Objects.equals(name, item.name);

reference

https://docs.oracle.com/en/java/javase/17/core/creating-immutable-lists-sets-and-maps.html

 

13. Select statements that are true about Concurrency in java?

1. threads can consist of multiple processes.
2. Order of execution of threads relies on thread priority and depends on the underlying platform(os, cores, etc).
3. Context switch is a mechanism of storing state of thread by scheduler that has already finished its execution.
4. Thread scheduler tries to minimize the number of context switch operations due to time cost.
5. threads can share memory.

Overall explanation

1st is false because processes are formed from one or more threads. 2nd is true because threads can have priority and executed due to priority, by the way it also depends on number of cores, type of os and others factors, 3rd is false. 

Context switch - is mechanism to store state of executing thread that worked quantum of time and does not finished it's operation that's why its state is stored until next execution order, 4th is true. 

Scheduler of threads tries to minimize number of context switches because its takes time to store and then restore threads state. 5th is true because threads can share memory inside one process https://docs.oracle.com/javase/tutorial/essential/concurrency/index.html

That's all about the 13 Practice question for Java SE 17 Certification exam with code 1Z0-829. If you want to pass this exam in first attempt which you should then practicing solving question is great way to build speed, accuracy and confidence. 

]It also help you to learn better and you will find your strong and weak areas to work on. And, you want to see more question,  you can now join the course for just $9.9 (valid for only 5 days)

Here is your coupon and discount link -  Join Java SE 17 Mock Test now for $9.9

That's all in this list of 13 free Practice questions for 1Z0-829 exam. If you like this question consider buying my course and if  you need more free question or free coupon for this course, please let me know in comments. I would like to give free coupons to needy students. 

All the best for your Java SE 17 certification in 2024, and let me know how you found this course or if you have any doubts about any concept. If you are a Java developer and want to get certified or want to take your Java skill to next level, I highly recommend you to go for Java certification like 1Z0-829, you will not only learn Java better but also become certified and increase your earning potential.

Thanks a lot, guys, for trusting me, and I hope you enjoy this course.

My other Books and Courses you may like

1. Spring Certification Practice Test on Udemy
2. Grokking the Java Interview
3. Grokking the Spring Boot Interview
4. Grokking the Java Interview Part 2
5. Grokking the SQL Interview
6. Grokking the Java SE 17 Developer Certification (1Z0-829 Exam)
7. Spring Framework Practice Questions

Once again, thank you all for your love and support. I really appreciate the response you gave to my first book. If you have any feedback or doubt feel free to ask.