Java professionals ask these questions:
“Why Oracle Java Certification?”
“Why get Oracle Certified in Java?”
“Does it worth for the money I spend?”
The reason for taking Oracle Java Certification is to differentiate general programmers from certified experts. You may get additional benefits like getting a good job, salary hike, designation changes, role changes and higher promotion.
Java Certification proves that you have relevant knowledge and skills:
Java Certification document proof shows that you have relevant skills or knowledge in latest API changes.
You are considered as expert from your team (competing with you) that you have some specialized skills or knowledge.
Other benefits of Oracle Java Certification:
Oracle community keep on working changes in Java development and doing more research to release new API/Packages to modern software development. Preparing for a Java certification exam gives you focus on learning these important new changes.The preparation experience gives you confidence necessary for getting a job or asking for a promotion or a raise.
How Java Certifications are popular in IT industries?
Java is everywhere: on all platforms and devices and in all countries around the world. It enables developers to make programs work just about anywhere. And it inspired the evolution of an incredible technology community. The brilliance of Java is the platform independent.
This popularity of Java translates to the need for more Java programmers in the IT industry.
Java certifications are one of the most popular IT certifications, so potential employers or your managers will recognize this certification.
There is always need for high-quality Java developers and having this certification shows that you are one of those qualified Java developers
What are Java Certifications?
The Java Certifications are organized based on the four levels: Associate, Professional, Expert, and Master levels.
Oracle Certified Associate:
This certification shows that you have fundamental skills necessary for an IT career; it provides a strong foundation for further exams.
| Oracle Certified Associate, Java SE 8 Programmer | ||
| Oracle Certified Associate, Java SE 7 Programmer |
Oracle Certified Professional:
This certification shows that you have professional skills and technical expertise to develop applications.
Oracle Certified Expert:
This certification shows that you have specialized levels of skills and knowledge.
Oracle Certified Master:
This certification shows that you have mastery or expert level of skills and knowledge.
| Oracle Certified Master, Java SE 6 Developer (Essay & Assignment) | ||
| Oracle Certified Master, Java EE 6 Enterprise Architect | ||
| Oracle Certified Master, Java EE 6 Enterprise Architect Assignment Exam |
How do I choose my Java Certification?
The better place to choose your certification is at http://www.javacertification.net/ or visit http://www.myexamcloud.com/onlineexam/collection/javacertification for sample practice exams.
Java Programmer Certifications:
Java SE 8 Programmer I: The is a beginner level exam – if you pass it you get Oracle Certified Associate Java SE 8 Programmer (OCAJP 8) certification. There are no pre-requisites for taking this exam.
Java SE 8 Programmer II exam: For Java SE 8 Programmer II exam, the prerequisite is that you should have passed the OCAJP 8 exam.
Upgrade to Java SE 8 Programmer: This special upgrade path has two different exams for Java SE 7 certified and Java SE 6 or older version certified candidates. If you pass either of these exams, you will get Oracle Certified Professional, Java SE 8 Programmer (OCPJP 8) certification. If you have older Java certifications such as OCPJP7, SCJP 6/SCJP 5, then you can go for Upgrade to Java SE 8 Programmer; otherwise, you need to take
You can find three different exams in Java SE 7.
Java SE 7 Programmer I: The is a beginner level exam in Java SE 7 – if you pass it you get Oracle Certified Associate Java SE 7 Programmer (OCAJP 7) certification. There are no pre-requisites for taking this exam.
Java SE 7 Programmer II exam: For Java SE 7 Programmer II exam, the prerequisite is that you should have passed the OCAJP 7 exam.
Upgrade to Java SE 7 Programmer: This special upgrade path exam for Java SE 6 certified or older version certified candidates. If you pass this exam, you will get Oracle Certified Professional, Java SE 7 Programmer (OCPJP 7) certification. If you have older Java certifications such as SCJP 6/SCJP 5, then you can go for Upgrade to Java SE 7 Programmer; otherwise, you need to take
Java SE 8 Programmer Certification Topics:
OCAJP 8 Topics:
Java Basics
Define the scope of variables
Define the structure of a Java class
Create executable Java applications with a main method; run a Java program from the command line; produce console output
Import other Java packages to make them accessible in your code
Compare and contrast the features and components of Java such as: platform independence, object orientation, encapsulation, etc.
Working With Java Data Types
Declare and initialize variables (including casting of primitive data types)
Differentiate between object reference variables and primitive variables
Know how to read or write to object fields
Explain an Object’s Lifecycle (creation, “dereference by reassignment” and garbage collection)
Develop code that uses wrapper classes such as Boolean, Double, and Integer
Using Operators and Decision Constructs
Use Java operators; use parentheses to override operator precedence
Test equality between Strings and other objects using == and equals ()
Create if and if/else and ternary constructs
Use a switch statement
Creating and Using Arrays
Declare, instantiate, initialize and use a one-dimensional array
Declare, instantiate, initialize and use multi-dimensional arrays
Using Loop Constructs
Create and use while loops
Create and use for loops including the enhanced for loop
Create and use do/while loops
Compare loop constructs
Use break and continue
Working with Methods and Encapsulation
Create methods with arguments and return values; including overloaded methods
Apply the static keyword to methods and fields
Create and overload constructors; differentiate between default and user defined constructors
Apply access modifiers
Apply encapsulation principles to a class
Determine the effect upon object references and primitive values when they are passed into methods that change the values
Working with Inheritance
Describe inheritance and its benefits
Develop code that makes use of polymorphism; develop code that overrides methods; differentiate between the type of a reference and the type of an object
Determine when casting is necessary
Use super and this to access objects and constructors
Use abstract classes and interfaces
Handling Exceptions
Differentiate among checked exceptions, unchecked exceptions, and Errors
Create a try-catch block and determine how exceptions alter normal program flow
Describe the advantages of Exception handling
Create and invoke a method that throws an exception
Recognize common exception classes (such as NullPointerException, ArithmeticException, ArrayIndexOutOfBoundsException, ClassCastException)
Working with Selected classes from the Java API
Manipulate data using the StringBuilder class and its methods
Create and manipulate Strings
Create and manipulate calendar data using classes from java.time.LocalDateTime, java.time.LocalDate, java.time.LocalTime, java.time.format.DateTimeFormatter, java.time.Period
Declare and use an ArrayList of a given type
Write a simple Lambda expression that consumes a Lambda Predicate expression
OCPJP 8 Topics:
Java Class Design
Implement encapsulation
Implement inheritance including visibility modifiers and composition
Implement polymorphism
Override hashCode, equals, and toString methods from Object class
Create and use singleton classes and immutable classes
Develop code that uses static keyword on initialize blocks, variables, methods, and classes
Advanced Java Class Design
Develop code that uses abstract classes and methods
Develop code that uses the final keyword
Create inner classes including static inner class, local class, nested class, and anonymous inner class
Use enumerated types including methods, and constructors in an enum type
Develop code that declares, implements and/or extends interfaces and use the @Override annotation.
Create and use Lambda expressions
Generics and Collections
Create and use a generic class
Create and use ArrayList, TreeSet, TreeMap, and ArrayDeque objects
Use java.util.Comparator and java.lang.Comparable interfaces
Collections Streams and Filters
Iterate using forEach methods of Streams and List
Describe Stream interface and Stream pipeline
Filter a collection by using lambda expressions
Use method references with Streams
Lambda Built-in Functional Interfaces
Use the built-in interfaces included in the java.util.function package such as Predicate, Consumer, Function, and Supplier
Develop code that uses primitive versions of functional interfaces
Develop code that uses binary versions of functional interfaces
Develop code that uses the UnaryOperator interface
Java Stream API
Develop code to extract data from an object using peek() and map() methods including primitive versions of the map() method
Search for data by using search methods of the Stream classes including findFirst, findAny, anyMatch, allMatch, noneMatch
Develop code that uses the Optional class
Develop code that uses Stream data methods and calculation methods
Sort a collection using Stream API
Save results to a collection using the collect method and group/partition data using the Collectors class
Use flatMap() methods in the Stream API
Exceptions and Assertions
Use try-catch and throw statements
Use catch, multi-catch, and finally clauses
Use Autoclose resources with a try-with-resources statement
Create custom exceptions and Auto-closeable resources
Test invariants by using assertions
Use Java SE 8 Date/Time API
Create and manage date-based and time-based events including a combination of date and time into a single object using LocalDate, LocalTime, LocalDateTime, Instant, Period, and Duration
Work with dates and times across timezones and manage changes resulting from daylight savings including Format date and times values
Define and create and manage date-based and time-based events using Instant, Period, Duration, and TemporalUnit
Java I/O Fundamentals
Read and write data from the console
Use BufferedReader, BufferedWriter, File, FileReader, FileWriter, FileInputStream, FileOutputStream, ObjectOutputStream, ObjectInputStream, and PrintWriter in the java.io package.
Java File I/O (NIO.2)
Use Path interface to operate on file and directory paths
Use Files class to check, read, delete, copy, move, manage metadata of a file or directory
Use Stream API with NIO.2
Java Concurrency
Create worker threads using Runnable, Callable and use an ExecutorService to concurrently execute tasks
Identify potential threading problems among deadlock, starvation, livelock, and race conditions
Use synchronized keyword and java.util.concurrent.atomic package to control the order of thread execution
Use java.util.concurrent collections and classes including CyclicBarrier and CopyOnWriteArrayList
Use parallel Fork/Join Framework
Use parallel Streams including reduction, decomposition, merging processes, pipelines and performance.
Building Database Applications with JDBC
Describe the interfaces that make up the core of the JDBC API including the Driver, Connection, Statement, and ResultSet interfaces and their relationship to provider implementations
Identify the components required to connect to a database using the DriverManager class including the JDBC URL
Submit queries and read results from the database including creating statements, returning result sets, iterating through the results, and properly closing result sets, statements, and connections
Localization
Read and set the locale by using the Locale object
Create and read a Properties file
Build a resource bundle for each locale and load a resource bundle in an application
Note that the Upgrade to Java SE 8 Programmer covers only on additional topics or Java 8 changes.
OCPJP 8 Upgrade Exam Topics (from SE 7 to SE 8)
Lambda Expressions
Describe and develop code that uses Java inner classes, including nested class, static class, local class, and anonymous classes
Describe and write functional interfaces
Describe a lambda expression; refactor the code that uses an anonymous inner class to use a lambda expression; describe type inference and target typing
Using Built-in Lambda Types
Describe the interfaces of the java.util.function package
Develop code that uses the Function interface
Develop code that uses the Consumer interface
Develop code that uses the Supplier interface
Develop code that uses the UnaryOperator interface
Develop code that uses the Predicate interface
Develop code that uses the primitive and binary variations of the base interfaces of the java.util.function package
Develop code that uses a method reference, including refactoring a lambda expression to a method reference
Java Collections and Streams with Lambdas
Develop code that iterates a collection by using the forEach() method and method chaining
Describe the Stream interface and pipelines
Filter a collection by using lambda expressions
Identify the operations, on stream, that are lazy
Collection Operations with Lambda
Develop code to extract data from an object by using the map() method
Search for data by using methods such as findFirst(), findAny(), anyMatch(), allMatch(), and noneMatch()
Describe the unique characteristics of the Optional class
Perform calculations by using Java Stream methods, such as count(), max(), min(), average(), and sum()
Sort a collection by using lambda expressions
Develop code that uses the Stream.collect() method and Collectors class methods, such as averagingDouble(), groupingBy(), joining(), and partitioningBy()
Parallel Streams
Develop code that uses parallel streams
Implement decomposition and reduction in streams
Lambda Cookbook
Develop code that uses Java SE 8 collection improvements, including Collection.removeIf(), List.replaceAll(), Map.computeIfAbsent(), and Map.computeIfPresent() methods
Develop code that uses Java SE 8 I/O improvements, including Files.find(), Files.walk(), and lines() methods
Use flatMap() methods in the Stream API
Develop code that creates a stream by using the Arrays.stream() and IntStream.range() methods
Method Enhancements
Add static methods to interfaces
Define and use a default method of an interface and describe the inheritance rules for the default method
Use Java SE 8 Date/Time API
Create and manage date- and time-based events, including a combination of date and time in a single object, by using LocalDate, LocalTime, LocalDateTime, Instant, Period, and Duration
Work with dates and times across time zones and manage changes resulting from daylight savings, including Format date and times values
Define, create, and manage date- and time-based events using Instant, Period, Duration, and TemporalUnit
OCPJP Upgrade Exam Topics (from Java SE 6 or older versions)
Language Enhancements
Develop code that uses String objects in the switch statement, binary literals, and numeric literals, including underscores in literals
Develop code that uses try-with-resources statements, including using classes that implement the AutoCloseable interface
Develop code that handles multiple Exception types in a single catch block
Use static and default methods of an interface including inheritance rules for a default method
Concurrency
Use classes from the java.util.concurrent package including CyclicBarrier and CopyOnWriteArrayList with a focus on the advantages over and differences from the traditional java.util collections
Use Lock, ReadWriteLock, and ReentrantLock classes in the java.util.concurrent.locks and java.util.concurrent.atomic packages to support lock-free thread-safe programming on single variables
Use Executor, ExecutorService, Executors, Callable, and Future to execute tasks using thread pools
Use the parallel Fork/Join Framework
Localization
Describe the advantages of localizing an application and developing code that defines, reads, and sets the locale with a Locale object
Build a resource bundle for a locale and call a resource bundle from an application
Create and manage date- and time-based events by using LocalDate, LocalTime, LocalDateTime, Instant, Period, and Duration, including a combination of date and time in a single object
Format dates, numbers, and currency values for localization with the NumberFormat and DateFormat classes, including number and date format patterns
Work with dates and times across time zones and manage changes resulting from daylight savings
Java File I/O (NIO.2)
Operate on file and directory paths by using the Paths class
Check, delete, copy, or move a file or directory by using the Files class
Recursively access a directory tree by using the DirectoryStream and FileVisitor interfaces
Find a file by using the PathMatcher interface, and use Java SE 8 I/O improvements, including Files.find(), Files.walk(), and lines() methods
Observe the changes in a directory by using the WatchService interface
Lambda
Define and write functional interfaces and describe the interfaces of the java.util.function package
Describe a lambda expression; refactor the code that uses an anonymous inner class to use a lambda expression; describe type inference and target typing
Develop code that uses the built-in interfaces included in the java.util.function package, such as Function, Consumer, Supplier, UnaryOperator, Predicate, and Optional APIs, including the primitive and binary variations of the interfaces
Develop code that uses a method reference, including refactoring a lambda expression to a method reference
Java Collections
Develop code that uses diamond with generic declarations
Develop code that iterates a collection, filters a collection, and sorts a collection by using lambda expressions
Search for data by using methods, such as findFirst(), findAny(), anyMatch(), allMatch(), and noneMatch()
Perform calculations on Java Streams by using count, max, min, average, and sum methods and save results to a collection by using the collect method and Collector class, including the averagingDouble, groupingBy, joining, partitioningBy methods
Develop code that uses Java SE 8 collection improvements, including the Collection.removeIf(), List.replaceAll(), Map.computeIfAbsent(), and Map.computeIfPresent() methods
Develop code that uses the merge(), flatMap(), and map() methods on Java Streams
Java Streams
Describe the Stream interface and pipelines; create a stream by using the Arrays.stream() and IntStream.range() methods; identify the lambda operations that are lazy
Develop code that uses parallel streams, including decomposition operation and reduction operation in streams
Note that the Upgrade to Java SE 8 Programmer covers only on additional topics or Java 7-8 changes.
Exam Pattern
The Java Certification exam has only multiple-choice questions. You may get 4 to 7 options for each question; but most questions will have four options. Note that many questions will have more than one answer to be selected – the question will clearly tell you how many options you need to select.
The real exam questions intend to test your ability to solve real-world problems, so most questions to be programming-based questions. There may be conceptual questions as well and it test your knowledge and will not have any programs in it.
Most questions will check your knowledge of language features and their usage. They will test if you understand language features and can apply them in practical situations.
Many questions will test your knowledge of library features and their usage. They will test if you are familiar with Java APIs and know how to use them in practical situations.
How to Prepare for Java Certification?
Do more programming
You must write programs on each and every exam objective and learn from your mistakes.
Read Oracle tutorial and API documents.
Note down important method signatures and workout more programs related to them.
Work more on new features.
How to register for Java Certification?
How to register for OCAJP 8?
Step 1: Oracle :: Pearson VUEOpen this page, If you are a first time visitor then click on Create an account
Step 2: Click on Proctored Exams
Step 3: You will see a screen to search exam. Enter the exam code you want to give. You can get exam code details at Java Certifications MyExamCloud Exam Collections
Step 4: You will see the exam name , fees for the exam and language of exam in the screen , Click on Schedule this exam.
Step 5. You will see Confirm Exam Selection screen , click on the Proceed to Scheduling .
Step 6. Now, Enter into the search box ,the near by place for test center . Select the test center and click on Next.
Step 7. Select Date and Time on which you will write your exam.
Step 8. Check the information again , date and time . After confirming then click on the Proceed to Checkout.
Step 9. After that you need to check the information and enter the credit card details.
Congrats, you have successfully scheduled your Java Certification exam.
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