Preparation tips for the ORACLE CERTIFIED PROFESSIONAL: Java SE 11?

The questions are longer and more in-depth than Java SE 8, and at times you need to choose more than one answer.

 For the Oracle Certified Professional: Java SE 11 Programmer I: Here’s an overview of all the topics you need to cover for the Oracle Certified Java SE 11 Programmer I exam:

Introduction to Java

• Getting familiar with Java technology and environment
• What are the key features of the Java language
• Creating and running a simple program

Java Datatypes

• Variables, working with strings
• Working with numbers and manipulating numeric data

Java Arrays 

• 2D arrays
• Loop constructs
• Nesting Loops

Working with conditions

• Relational and conditional operators
• Using IF/ELSE constructs, switch statements and Netbeans debugger
• Using Operators and Decision Constructs 
• Working with conditions and a list of items

Methods

• Creating methods
• Method arguments, static methods
• Passing arguments to methods
• Overloading

Classes and objects

• Creating and working with objects and classes
• Working with object references, declaring and initializing objects
• Defining fields and methods

Inheritance and reusing implementations through it

• Overview of inheritance
• Working with subclasses and superclasses
• Creating and extending abstract classes
• Exception handling 

Encapsulation and polymorphism

• Applying Encapsulation 
• Introduction to polymorphism
• Programming Abstractly Through Interfaces 
• Using list interface
• Introducing Lambda expressions

Exception handling

• Overview and propagation of exceptions
• Handling multiple exceptions

Modules

• Understanding module system
• Module declarations

JShell

• Basics of JShell

For the Oracle Certified Professional: Java SE 11 Programmer II:

Here’s an overview of all the topics you need to cover for the Oracle Certified Java SE 11 

Programmer II exam:

Java Fundamentals and interfaces

• Final Classes – Creating and using them
• Creating and Using Interfaces in both default and in private mode as well

Functional Interface and Lambda Expressions 

• Built-in Functional Interfaces 
• Streams, collections and filters
• Parallel streams
• Lambda Operations on Streams 
• Custom streams

Modular programming

• Introduction and services in a modular application
• Migration to a Modular Application 
• Concurrency 

Generics and collections

• Collections framework
• Iterators
• What are generics
• Annotations
• Usage patterns and annotations
• Applying annotations to methods and classes
• Custom annotations

Java API Programming and Secure Coding Concepts

• I/O (Fundamentals and NIO2)
• Secure Coding
• Database Applications with JDBC
• Localization

Exception Handling and Assertions 

• Exception handling
• Error handling
• Assertions

The above-mentioned topics are an overview of the topics you need to study for the Oracle Certified Professional: Java SE 11 Developer exam

Preparation Tips

Before starting with some tips for preparation of the Oracle Certified Professional: Java SE 11 exam you to register for it. The registration link can be found on the official Oracle page. You need to schedule the exam according to your convenience and depending on how much time you need for preparation.

 1. Books are your best friend

Finding the right book for your upcoming Java certification exam is very important. They help you cover all the exam topics, you can solve the practice questions at the end of the chapter, and share a lot of exam-specific tips that you don’t find in any normal Java book.

2. Join the Oracle training center

Oracle provides On-demand as well as Live virtual classroom training. You can enroll for them according to your own convenience. In this training, you will get a complete idea of all the important concepts that will be asked in the exam.

3. Coding all the way

There is no alternative for coding. You must code daily to retain whatever you have learned so far. There’s no alternative for this one at least. Here your reasoning and problem-solving ability will come into play.

 4. Enter the e-Learning world

Enrolling for online courses is one of the best ways to learn new technology in a very short time. There are a lot of options for this, you can search for the best course that suits you. You can go for either self-paced ones or for online classrooms. There are plenty of courses available online to help you boost your learning process.

5. The virtual exam - Simulator

Select a good exam simulator. Try to keep your target score as high as you can. This will help you boost your speed. You will get a better idea of where you stand. Mock tests are also equally important. They will help you assess yourself before appearing for the final exam.

6. Practice is the key to success

Solve as many practice papers as you can before you appear for the final one. This will increase your speed and accuracy for the big exam.

Final thoughts

As they say, "Hard-work and dedication conquers all". You are now just a few steps from adding the Java SE 11 certification gem to your crown. Also, it's always beneficial to have a conversation with someone who has already been through your situation. You can join discussion forums like CodeRanch or Oracle’s official Java Certification forum for that. You can ask questions, clear doubts, and become familiar with other candidates who are preparing for exams and this will also keep you motivated and up to date.

Best of luck!