Java 8 (808/809) vs Java 11 (819)

[Jeanne Boyarsky]

It's often helpful to be able to map objectives between exams.

Note: Oracle makes changes to the objectives. These Java 11 objectives are as of when the 819 exam launched and may vary slightly from the latest. The gist is the same.

OCP 11 819 Objective	OCP 11 819 Text	Java 8 Objective
Working with Java data types
1.1	Use primitives and wrapper classes, including, operators, parentheses, type promotion and casting	808 (2.1, 2.2, 3.1)
1.2	Handle text using String and StringBuilder classes	808 (3.2, 9.1, 9.2), 809 (1.4)
1.3	Use local variable type inference, including as lambda parameters
Controlling Program Flow
2.1	Create and use loops, if/else, and switch statements	808 (3.3, 3.4, 5.1, 5.2, 5..3, 5.4, 5.5)
Java Object-Oriented Approach
3.1	Declare and instantiate Java objects including nested class objects, and explain objects' lifecycles (including creation, dereferencing by reassignment, and garbage collection)	808 (1.2, 1.4, 2.4, 6.1, 6.2, 6.3, 6.6), 809 (1.6, 2.3, 2.5)
3.2	Define and use fields and methods, including instance, static and overloaded methods	808 (2.3), 809 (1.6)
3.3	Initialize objects and their members using instance and static initialiser statements and constructors
3.4	Understand variable scopes, apply encapsulation and make objects immutable	808 (1.1, 3.4, 3.5), 809 (1.1, 1.2, 1.5)
3.5	Create and use subclasses and superclasses, including abstract classes	808 (6.1, 7.1, 7.5, 7.6), 809 (2.1, 2.2)
3.6	Utilize polymorphism and casting to call methods, differentiate object type versus reference type	808 ( 7.1, 7.2, 7.3, 7.4), 809(1.3)
3.7	Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods	808 (7.7)
3.8	Create and use enumerations	809 (2.4)
Exception Handling
4.1	Handle exceptions using try/catch/finally clauses, try-with-resource, and multi-catch statements	808 (8.1, 8.2, 8.3, 8.4, 8.5), 809 (6.1, 6.2, 6.3)
4.2	Create and use custom exceptions	809 (6.4)
Working with Arrays and Collections
5.1	Use generics, including wildcards	809 (3.1)
5.2	Use a Java array and List, Set, Map and Deque collections, including convenience methods	808 (4.1, 4.2, 9.4), 809 (3.2, 3.5)
5.3	Sort collections and arrays using Comparator and Comparable interfaces	808 (4.1), 809 (3.3)
Working with Streams and Lambda expressions
6.1	Implement functional interfaces using lambda expressions, including interfaces from the java.util.function package	808 (9.5), 809 (1.4, 2.6, 3.8, 4.1,, 4.2, 4.3, 4.4, 5.1, 5.2)
6.2	Use Java Streams to filter, transform and process data	809 (3.4, 3.5, 3.6, 3.7, 5.5, 5.7)
6.3	Perform decomposition and reduction, including grouping and partitioning on sequential and parallel streams	809 (5.3, 5.4, 5.6, 5.7, 10.6)
Java Platform Module System
7.1	Deploy and execute modular applications, including automatic modules	new topic
7.2	Declare, use, and expose modules, including the use of services	new topic
Concurrency
8.1	Create worker threads using Runnable and Callable, and manage concurrency using an ExecutorService and java.util.concurrent API	809 (10.1)
8.2	Develop thread-safe code, using different locking mechanisms and java.util.concurrent API	809 (10.2, 10.4)
Java I/O API
9.1	Read and write console and file data using I/O Streams	809 (8.1, 8.2)
9.2	Implement serialization and deserialization techniques on Java objects	new topic
9.3	Handle file system objects using java.nio.file API	809 (9.1, 9.2, 9.3)
Secure Coding in Java SE Application
10.1	Develop code that mitigates security threats such as denial of service, code injection, input validation and ensure data integrity	new topic
10.2	Secure resource access including filesystems, manage policies and execute privileged code	new topic
Database Applications with JDBC
11.1	Connect to and perform database SQL operations, process query results using JDBC API	(809 )11.1, 11.2, 11.3)
Annotations
12.1	Create, apply, and process annotations	new topic
Localization
13.1	Implement Localization using Locale, resource bundles, and Java APIs to parse and format messages, dates, and numbers	809 (12.2, 12.4)

OCA 8 Objective	OCA 8 Text	OCP 11 819 Objective
	Java Basics
1.1	Define the scope of variables	3.4
1.2	Define the structure of a Java class	3.1
1.3	Create executable Java applications with a main method; run a Java program from the command line; including console output.	n/a
1.4	Import other Java packages to make them accessible in your code	3.1
1.5	Compare and contrast the features and components of Java such as: platform independence, object orientation, encapsulation, etc.	n/a
	Working With Java Data Types
2.1	Declare and initialize variables (including casting of primitive data types)	1.1
2.2	Differentiate between object reference variables and primitive variables	1.1
2.3	Know how to read or write to object fields	3.2
2.4	Explain an Object's Lifecycle (creation, "dereference by reassignment" and garbage collection)	3.1
2.5	Use call methods on user-created wrapper class objects	No longer on exam
	Using Operators and Decision Constructs
3.1	Use Java operators; including parentheses to override operator precedence	1.1
3.2	Test equality between Strings and other objects using == and equals ()	1.2
3.3	Create if and if/else constructs and ternary constructs	2.1
3.4	Use a switch statement	2.1
	Creating and Using Arrays
4.1	Declare, instantiate, initialize and use a one-dimensional array	5.2, 5.3
4.2	Declare, instantiate, initialize and use multi-dimensional array	5.2
	Using Loop Constructs
5.1	Create and use while loops	2.1
5.2	Create and use for loops including the enhanced for loop	2.1
5.3	Create and use do/while loops	2.1
5.4	Compare loop constructs	2.1
5.5	Use break and continue	2.1
	Working with Methods and Encapsulation
6.1	Create methods with arguments and return values; including overloaded methods	3.1, 3.5
6.2	Apply the static keyword  to methods and fields	3.1
6.3	Create and overload constructors; including impact on default constructors	3.1
6.4	Apply access modifiers	3.4
6.5	Apply encapsulation principles to a class	3.4
6.6	Determine the effect upon object references and primitive values when they are passed  into methods that change the values	3.1
	Working with Inheritance
7.1	Describe the hierarchy of implementing inheritance	3.5, 3.6
7.2	Develop code that demonstrates the use of polymorphism	3.6
7.3	Differentiate between the type of a reference and the type of an object; including overriding and object type versus reference type	3.6
7.4	Determine when casting is necessary	3.6
7.5	Use super and this to access objects and constructors	3.5, 3.6
7.6	Use abstract classes and interfaces	3.5, 3.7
	Handling Exceptions
8.1	Differentiate among checked exceptions, RuntimeExceptions and Errors	4.1
8.2	Create a try-catch block and determine how exceptions alter normal program flow	4.1
8.3	Describe the advantages of Exception handling	4.1
8.4	Invoke a method that throws an exception	4.1
8.5	Recognize common exception classes (such as NullPointerException, ArithmeticException, ArrayIndexOutOfBoundsException, ClassCastException)	4.1
	Working with Selected Classes from the Java API
9.1	Manipulate data using the StringBuilder class and its methods	1.2
9.2	Creating and manipulating Strings	1.2
9.3	Create and manipulate calendar data using classes from java.time.LocalDateTime,  java.time.LocalDate, java.time.LocalTime, java.time.format.DateTimeFormatter, java.time.Period	No longer in objectives
9.4	Declare and use an ArrayList of a given type	5.2
9.5	Write a simple Lambda expression that consumes a Lambda Predicate expression	6.1

OCPJP 8 Objective	OCPJP 8 Text	OCP 11 819 Objective
Java Class Design
1.1	Implement encapsulation	3.4
1.2	Implement inheritance including visibility modifiers and composition	3.4
1.3	Implement polymorphism	3.6
1.4	Override hashCode, equals, and toString methods from Object class	1.2, 6.1
1.5	Create and use singleton classes and immutable classes	3.4 (singleton no longer in scope)
1.6	Develop code that uses static keyword on initialize blocks, variables, methods, and classes	3.1, 3.2
2.1	Develop code that uses abstract classes and methods	3.5
2.2	Develop code that uses final keyword	3.5
2.3	Create inner classes including static inner class, local class, nested class, and anonymous inner class	3.1
2.4	Use enumerated types including methods, and constructors in an enum type	3.8
2.5	Develop code that declares, implements and/or extends interfaces and use the atOverride annotation	3.1
2.6	Create and use Lambda expressions	6.1
Generics and Collections
3.1	Create and use a generic class	5.1
3.2	Create and use ArrayList, TreeSet, TreeMap, and ArrayDeque objects	5.2
3.3	Use java.util.Comparator and java.lang.Comparable interfaces	5.3
3.4	Collections Streams and Filters	6.2
3.5	Iterate using forEach methods of Streams and List	5.2, 6.2
3.6	Describe Stream interface and Stream pipeline	6.2
3.7	Filter a collection by using lambda expressions	6.2
3.8	Use method references with Streams	6.1
Lambda Built-in Functional Interfaces
4.1	Use  the built-in interfaces included in the java.util.function package such as Predicate, Consumer, Function, and Supplier	6.1
4.2	Develop code that uses primitive versions of functional interfaces	6.1
4.3	Develop code that uses binary versions of functional interfaces	6.1
4.4	Develop code that uses the UnaryOperator interface	6.1
Java Stream API
5.1	Develop code to extract data from an object using peek() and map() methods including primitive versions of the map() method	6.1
5.2	Search for data by using search methods of the Stream classes including findFirst, findAny, anyMatch, allMatch, noneMatch	6.1
5.3	Develop code that uses the Optional class	6.3
5.4	Develop code that uses Stream data methods and calculation methods	6.3
5.5	Sort a collection using Stream API	6.2
5.6	Save results to a collection using the collect method and group/partition data using the Collectors class	6.3
5.7	Use of merge() and flatMap() methods of the Stream API	6.2, 6.3
Exceptions and Assertions
6.1	Use try-catch and throw statements	4.1
6.2	Use catch, multi-catch, and finally clauses	4.1
6.3	Use Autoclose resources with a try-with-resources statement	4.1
6.4	Create custom exceptions and Auto-closeable resources	4.2
6.5	Test invariants by using assertions	No longer in objectives
Use Java SE 8 Date/Time API
7.1	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	No longer in objectives
7.2	Work with dates and times across timezones and manage changes resulting from daylight savings including Format date and times values	No longer in objectives
7.3	Define and create and manage date-based and time-based events using Instant, Period, Duration, and TemporalUnit	No longer in objectives
Java I/O Fundamentals
8.1	Read and write data from the console	9.1
8.2	Use BufferedReader, BufferedWriter, File, FileReader, FileWriter, FileInputStream, FileOutputStream, ObjectOutputStream, ObjectInputStream, and PrintWriter in the java.io package	9.1
Java File I/O (NIO.2)
9.1	Use Path interface to operate on file and directory paths	9.2
9.2	Use Files class to check, read, delete, copy, move, manage metadata of a file or directory	9.2
9.3	Use Stream API with NIO.2	9.2
Java Concurrency
10.1	Create worker threads using Runnable, Callable and use an ExecutorService to concurrently execute tasks	8.1
10.2	Identify potential threading problems among deadlock, starvation, livelock, and race conditions	8.2
10.3	Use synchronized keyword and java.util.concurrent.atomic package to control the order of thread execution	No longer in objectives
10.4	Use java.util.concurrent collections and classes including CyclicBarrier and CopyOnWriteArrayList	8.2
10.5	Use parallel Fork/Join Framework	No longer in objectives
10.6	Use parallel Streams including reduction, decomposition, merging processes, pipelines and performance	6.3
Building Database Applications with JDBC
11.1	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	11.1 (Callable Statement no longer on exam)
11.2	Identify the components required to connect to a database using the DriverManager class including the JDBC URL	11.1
11.3	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	11.1
Localization
12.1	Describe the advantages of localizing an application	No longer in objectives
12.2	Read and set the locale by using the Locale object	12.1
12.3	Create and read a Properties file	No longer in objectives
12.4	Build a resource bundle for each locale and load a resource bundle in an application	12.1

[Charles O'Leary]

Jeanne and/or Scott,

Thanks!  I am conflicted since I feel as if the rug was pulled out from underneath me and, thanks to your only partially read 816 book by me, I nearly passed 816 on Sept 30 without the opportunity to fully prepare for 816.

From Oracle:

Oracle Certification Program normally provides 90 days notice for the retirement of any certification exam.

I've been thinking about 809 now that 816 has never existed and I don't see a date in sight as to when my employer will be migrating to Java 11.  (We aren't fully migrated to Java 8 yet.)  When you worked with Oracle, were you able to get a sense of their thinking in removing 816 and how and/or why Oracle's thinking would not also prompt Oracle to also eventually abruptly remove 809 as well?  

In other words, do you have a firm commitment from Oracle that they will not retire 809 within the next 6 months?

[Edmund Yong]

Hi Charles,

I'm sorry to learn that you didn't pass 816. I think you should aim for 819. It doesn't seem to make sense to go for Java 8 certification now. I'm sure this certification will retire soon. So why stress yourself again with another possible deadline? If you go for 819, you can take all the time you need to study. For your info, I have used Java 8 for a few years now as it is the version we use in my company, but I've never used any of the Java 11 features in work.

[Charles O'Leary]

Edmund Yong wrote:Hi Charles,

I'm sorry to learn that you didn't pass 816. I think you should aim for 819. It doesn't seem to make sense to go for Java 8 certification now. I'm sure this certification will retire soon. So why stress yourself again with another possible deadline? If you go for 819, you can take all the time you need to study. For your info, I have used Java 8 for a few years now as it is the version we use in my company, but I've never used any of the Java 11 features in work.

Under adverse circumstances, I would argue that it was a wise gamble (that I lost money on, but gained experience nevertheless).  819 expects too much (1299 pages of Sybex book info across 22 Chapters + Appendix + the Supplemental external Security info)  in too little time for one sitting, especially for a turtle like myself who always welcomes as much time as I can get (and uses at least 6 other programming languages on the job, so my mental capacity will come into question obviously).

I would imagine those that are looking at Java certification for the very first time may additionally be discouraged at 819.  

Here' Scott's Taking the 1Z0-819 Exam: Study Everything and Watch the Clock! (Part 2 of 2) latest post.

Personally, I think that it would be nice if Oracle would elect to increase the time to 3 hours to match the other exams without further changing anything else about 819.  Any Oracle employees reading this right now?  Can you put that in the suggestion box?  (Although, re-establishing 816 would be ideal... holding my breathe for that one. )

[Jeanne Boyarsky]

Charles O'Leary wrote: In other words, do you have a firm commitment from Oracle that they will not retire 809 within the next 6 months?

No. I also don't have a weak commitment. All I have is my opinion. And I think Oracle will get rid of the 809 "sometime in 2021".