Exam 1Z0-817: Upgrade OCP Java 6, 7 & 8 to Java SE 11 Developer Study Guide
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Exam 1Z0-817: Upgrade OCP Java 6, 7 & 8 to Java SE 11 Developer Study Guide

Mikalai Zaikin

Belarus
Minsk
<NZaikin[at]iba.by>

Copyright © 2020 Mikalai Zaikin

Redistribution of this document is permitted as long as it is not used for profits.

May 2020

Revision History
Revision commit 9f510c73455148ca889187328e5d74fce4412203	Date: Mon May 4 22:08:21 2020 +0300	Author: Mikalai Zaikin <mzaikin@gmail.com>
Fixed typos, thanks to Vasiliy S.
Revision commit a881c6f2f4c1bcaee1d2885b46e48bc533b226d4	Date: Wed Jan 8 21:47:59 2020 +0300	Author: Mikalai Zaikin <mzaikin@gmail.com>
Fixed typo with findFirst. Thanks to Anton B.
Revision commit 2b39a0184b9e73c79c4ac1a0423d617ddec798f9	Date: Mon Jan 6 22:19:52 2020 +0300	Author: Mikalai Zaikin <mzaikin@gmail.com>
Minor typo fix.

Abstract

The purpose of this document is to help in preparation for Upgrade OCP Java 6, 7 & 8 to Java SE 11 Developer Test (Exam 1Z0-817).

This document should not be used as the only study material for Upgrade OCP Java 6, 7 & 8 to Java SE 11 Developer Test (Exam 1Z0-817). It might cover not all objective topics, and it might be not enough. I tried to make this document as much accurate as possible, but if you find any error, please let me know.

I. Exam Objectives

1. Understanding Modules

1.1. Describe the Modular JDK
1.2. Declare modules and enable access between modules
1.3. Describe how a modular project is compiled and run

2. Services in a Modular Application

2.1. Describe the components of Services including directives
2.2. Design a service type, load the services using ServiceLoader, check for dependencies of the services including consumer module and provider module

3. Java Interfaces

3.1. Create and use methods in interfaces
3.2. Define and write functional interfaces

4. Lambda Operations on Streams

4.1. Extract stream data using map, peek, and flatMap methods
4.2. Search stream data using search findFirst, findAny, anyMatch, allMatch and noneMatch methods
4.3. Use the Optional class
4.4. Perform calculations using count, max, min, average and sum stream operations
4.5. Sort a collection using lambda expressions
4.6. Use Collectors with streams, including the groupingBy and partitioningBy operation

5. Java File I/O (NIO.2)

5.1. Use Path interface to operate on file and directory paths
5.2. Use Files class to check, delete, copy or move a file or directory
5.3. Use Stream API with Files

6. Migration to a Modular Application

6.1. Migrate the application developed using a Java version prior to SE 9 to SE 11 including top-down and bottom-up migration, splitting a Java SE 8 application into modules for migration
6.2. Use jdeps to determine dependencies and identify way to address the cyclic dependencies

7. Local-Variable Type Inference

7.1. Use local-variable type inference
7.2. Create and use lambda expressions with local-variable type inferred parameters

8. Lambda Expressions

8.1. Create and use lambda expressions
8.2. Use lambda expressions and method references
8.3. Use built-in functional interfaces including Predicate, Consumer, Function, and Supplier
8.4. Use primitive and binary variations of base interfaces of java.util.function package

9. Parallel Streams

9.1. Develop the code that use parallel streams
9.2. Implement decomposition and reduction with streams

10. Language Enhancements

10.1. Use try-with-resources construct
10.2. Develop code that handles multiple Exception types in a single catch block

Bibliography

II. Appendixes

1. Additional materials

1.1. How to build JDK module graph

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