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<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="x-ua-compatible" content="ie=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="Study guide for the Oracle Certified Professional, Java SE 8 Programmer Exam">
<title>Java 8 Programmer II Study Guide: Exam 1Z0-809</title>
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<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.2/jquery.min.js">
</script>
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</head>
<body>
<div class="nav"></div>
<div class="header">
<div class="title-container">
<div class="chapter-title">
<h1>From Java 6 to Java 8</h1>
</div>
</div>
</div>
<div class="container">
<div class="column intro-text">
<a href="#java7">Upgrade Java SE 7
to Java SE 8 OCP Programmer</a>
<br>
<a href="#java6">Upgrade to Java SE 8 OCP (Java SE 6 and all prior
versions)</a>
<p> </p>
<h2 id="java7">Upgrade Java SE 7 to Java SE 8 OCP Programmer</h2>
<p>Although this book has been written to cover all the objectives of the OCP Java 8 exam (1Z0‐809), you can use it to prepare the Upgrade Java SE 7 to Java SE 8 OCP exam (1Z0‐810) too.
</p>
<p>These are the chapters you have to review:</p>
<ul style="text-align:left;">
<li><a href="ch03.html" target="_blank">03. Inner Classes</a></li>
<li><a href="ch04.html" target="_blank">04. Interfaces</a></li>
<li><a href="ch08.html" target="_blank">08. Functional Interfaces</a></li>
<li><a href="ch09.html" target="_blank">09. Lambda Expressions</a></li>
<li><a href="ch10.html" target="_blank">10. Java Built-In Lambda Interfaces</a></li>
<li><a href="ch11.html" target="_blank">11. Method References</a></li>
<li><a href="ch12.html" target="_blank">12. Streams</a></li>
<li><a href="ch13.html" target="_blank">13. Iterating and Filtering Collections</a></li>
<li><a href="ch14.html" target="_blank">14. Optional Class</a></li>
<li><a href="ch15.html" target="_blank">15. Data Search</a></li>
<li><a href="ch16.html" target="_blank">16. Stream Operations on Collections</a></li>
<li><a href="ch17.html" target="_blank">17. Peeking, Mapping, Reducing and Collecting</a></li>
<li><a href="ch18.html" target="_blank">18. Parallel Streams</a></li>
<li><a href="ch21.html" target="_blank">21. Core Date/Time Classes</a></li>
<li><a href="ch22.html" target="_blank">22. Time Zones and Daylight Savings</a></li>
<li><a href="ch23.html" target="_blank">23. Files and Streams</a></li>
<li><a href="ch31.html" target="_blank">A1. From Java 6/7 to Java 8</a></li>
</ul>
<p>This table shows the objectives of the exam and the chapter(s) where they are covered:</p>
<table width="100%" border="1">
<tr>
<th>Objective</th>
<th>Chapter</th>
</tr>
<tr>
<td colspan="2">
<b>Lambda Expressions</b>
</td>
</tr>
<tr>
<td>Describe and develop code that uses Java inner classes, including nested class, static class, local class, and anonymous classes
</td>
<td><a href="ch03.html" target="_blank">03. Inner Classes</a></td>
</tr>
<tr>
<td>Describe and write functional interfaces</td>
<td><a href="ch08.html" target="_blank">08. Functional Interfaces</a></td>
</tr>
<tr>
<td>Describe a lambda expression; refactor the code that uses an anonymous inner class to use a lambda expression; describe type inference and target typing</td>
<td><a href="ch09.html" target="_blank">09. Lambda Expressions</a></td>
</tr>
<tr>
<td colspan="2">
<b>Using Built-in Lambda Types</b>
</td>
</tr>
<tr>
<td>Describe the interfaces of the java.util.function package</td>
<td><a href="ch10.html" target="_blank">10. Java Built-In Lambda Interfaces</a></td>
</tr>
<tr>
<td>Develop code that uses the Function interface</td>
<td><a href="ch10.html" target="_blank">10. Java Built-In Lambda Interfaces</a></td>
</tr>
<tr>
<td>Develop code that uses the Consumer interface</td>
<td><a href="ch10.html" target="_blank">10. Java Built-In Lambda Interfaces</a></td>
</tr>
<tr>
<td>Develop code that uses the Supplier interface</td>
<td><a href="ch10.html" target="_blank">10. Java Built-In Lambda Interfaces</a></td>
</tr>
<tr>
<td>Develop code that uses the UnaryOperator interface</td>
<td><a href="ch10.html" target="_blank">10. Java Built-In Lambda Interfaces</a></td>
</tr>
<tr>
<td>Develop code that uses the Predicate interface</td>
<td><a href="ch10.html" target="_blank">10. Java Built-In Lambda Interfaces</a></td>
</tr>
<tr>
<td>Develop code that uses the primitive and binary variations of the base interfaces of the java.util.function package</td>
<td><a href="ch10.html" target="_blank">10. Java Built-In Lambda Interfaces</a></td>
</tr>
<tr>
<td>Develop code that uses a method reference, including refactoring a lambda expression to a method reference</td>
<td><a href="ch11.html" target="_blank">11. Method References</a></td>
</tr>
<tr>
<td colspan="2">
<b>Java Collections and Streams with
Lambdas</b>
</td>
</tr>
<tr>
<td>Develop code that iterates a collection by using the forEach() method and method chaining</td>
<td><a href="ch13.html" target="_blank">13. Iterating and Filtering Collections</a></td>
</tr>
<tr>
<td>Describe the Stream interface and pipelines</td>
<td><a href="ch12.html" target="_blank">12. Streams</a></td>
</tr>
<tr>
<td>Filter a collection by using lambda expressions</td>
<td><a href="ch13.html" target="_blank">13. Iterating and Filtering Collections</a></td>
</tr>
<tr>
<td>Identify the operations, on stream, that are lazy</td>
<td><a href="ch12.html" target="_blank">12. Streams</a></td>
</tr>
<tr>
<td colspan="2">
<b>Collection Operations with Lambda</b>
</td>
</tr>
<tr>
<td>Develop code to extract data from an object by using the map() method
</td>
<td><a href="ch17.html" target="_blank">17. Peeking, Mapping, Reducing and Collecting</a></td>
</tr>
<tr>
<td>Search for data by using methods such as findFirst(), findAny(), anyMatch(), allMatch(), and noneMatch()</td>
<td><a href="ch15.html" target="_blank">15. Data Search</a></td>
</tr>
<tr>
<td>Describe the unique characteristics of the Optional class</td>
<td><a href="ch14.html" target="_blank">14. Optional Class</a></td>
</tr>
<tr>
<td>Perform calculations by using Java Stream methods, such as count(), max(), min(), average(), and sum()</td>
<td><a href="ch15.html" target="_blank">15. Data Search</a></td>
</tr>
<tr>
<td>Sort a collection by using lambda expressions</td>
<td><a href="ch16.html" target="_blank">16. Stream Operations on Collections</a></td>
</tr>
<tr>
<td>Develop code that uses the Stream.collect() method and Collectors class methods, such as averagingDouble(), groupingBy(), joining(), and partitioningBy()</td>
<td><a href="ch17.html" target="_blank">17. Peeking, Mapping, Reducing and Collecting</a></td>
</tr>
<tr>
<td>Develop code that uses parallel streams</td>
<td><a href="ch18.html" target="_blank">18. Parallel Streams</a></td>
</tr>
<tr>
<td>Implement decomposition and reduction in streams</td>
<td><a href="ch17.html" target="_blank">17. Peeking, Mapping, Reducing and Collecting</a></td>
</tr>
<tr>
<td colspan="2">
<b>Lambda Cookbook</b>
</td>
</tr>
<tr>
<td>Develop code that uses Java SE 8 collection improvements, including Collection.removeIf(), List.replaceAll(), Map.computeIfAbsent(), and Map.computeIfPresent() methods</td>
<td><a href="ch31.html" target="_blank">A1. From Java 6/7 to Java 8</a></td>
</tr>
<tr>
<td>Develop code that uses Java SE 8 I/O improvements, including Files.find(), Files.walk(), and lines() methods</td>
<td><a href="ch23.html" target="_blank">23. Files and Streams</a></td>
</tr>
<tr>
<td>Use flatMap() methods in the Stream API</td>
<td><a href="ch17.html" target="_blank">17. Peeking, Mapping, Reducing and Collecting</a></td>
</tr>
<tr>
<td>Develop code that creates a stream by using the Arrays.stream() and IntStream.range() methods</td>
<td><a href="ch12.html" target="_blank">12. Streams</a></td>
</tr>
<tr>
<td colspan="2">
<b>Method Enhancements</b>
</td>
</tr>
<tr>
<td>Add static methods to interfaces</td>
<td><a href="ch04.html" target="_blank">04. Interfaces</a></td>
</tr>
<tr>
<td>Define and use a default method of an interface and describe the inheritance rules for the default method</td>
<td><a href="ch04.html" target="_blank">04. Interfaces</a></td>
</tr>
<tr>
<td colspan="2">
<b>Use Java SE 8 Date/Time API</b>
</td>
</tr>
<tr>
<td>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
</td>
<td><a href="ch21.html" target="_blank">21. Core Date/Time Classes</a></td>
</tr>
<tr>
<td>Work with dates and times across time zones and manage changes resulting from daylight savings, including Format date and times values
</td>
<td><a href="ch22.html" target="_blank">22. Time Zones and Daylight Savings</a></td>
</tr>
<tr>
<td>Define, create, and manage date‐and time‐based events using Instant, Period, Duration, and TemporalUnit</td>
<td><a href="ch21.html" target="_blank">21. Core Date/Time Classes</a></td>
</tr>
</table>
<p> </p>
<h2 id="java6">Upgrade to Java SE 8 OCP (Java SE 6 and all prior versions)</h2>
<p>Just as the Java 7 upgrade exam, you can use this book to prepare the Upgrade to Java SE 8 OCP from Java SE 6 and all prior versions exam (1Z0‐813).</p>
<p>These are the chapters you have to review:</p>
<ul style="text-align:left;">
<li><a href="ch04.html" target="_blank">04. Interfaces</a></li>
<li><a href="ch06.html" target="_blank">06. Generics</a></li>
<li><a href="ch08.html" target="_blank">08. Functional Interfaces</a></li>
<li><a href="ch09.html" target="_blank">09. Lambda Expressions</a></li>
<li><a href="ch10.html" target="_blank">10. Java Built-In Lambda Interfaces</a></li>
<li><a href="ch11.html" target="_blank">11. Method References</a></li>
<li><a href="ch12.html" target="_blank">12. Streams</a></li>
<li><a href="ch13.html" target="_blank">13. Iterating and Filtering Collections</a></li>
<li><a href="ch15.html" target="_blank">15. Data Search</a></li>
<li><a href="ch17.html" target="_blank">17. Peeking, Mapping, Reducing and Collecting</a></li>
<li><a href="ch18.html" target="_blank">18. Parallel Streams</a></li>
<li><a href="ch19.html" target="_blank">19. Exceptions</a></li>
<li><a href="ch21.html" target="_blank">21. Core Date/Time Classes</a></li>
<li><a href="ch22.html" target="_blank">22. Time Zones and Daylight Savings</a></li>
<li><a href="ch24.html" target="_blank">24. NIO.2</a></li>
<li><a href="ch25.html" target="_blank">25. Files and Streams</a></li>
<li><a href="ch26.html" target="_blank">26. Thread Basics</a></li>
<li><a href="ch27.html" target="_blank">27. Concurrency</a></li>
<li><a href="ch28.html" target="_blank">28. Fork/Join Framework</a></li>
<li><a href="ch30.html" target="_blank">30. Localization</a></li>
<li><a href="ch31.html" target="_blank">A1. From Java 6/7 to Java 8</a></li>
</ul>
<p>This table shows the objectives of the exam and the chapter(s) where they are covered:</p>
<table width="100%" border="1">
<tr>
<th>Objective</th>
<th>Chapter</th>
</tr>
<tr>
<td colspan="2">
<b>Language Enhancements</b>
</td>
</tr>
<tr>
<td>Develop code that uses String objects in the switch statement, binary literals, and numeric literals, including underscores in literals
</td>
<td><a href="ch31.html" target="_blank">A1. From Java 6/7 to Java 8</a></td>
</tr>
<tr>
<td>Develop code that uses try-with-resources statements, including using classes that implement the AutoCloseable interface</td>
<td><a href="ch19.html" target="_blank">19. Exceptions</a></td>
</tr>
<tr>
<td>Develop code that handles multiple Exception types in a single catch block</td>
<td><a href="ch19.html" target="_blank">19. Exceptions</a></td>
</tr>
<tr>
<td>Use static and default methods of an interface including inheritance rules for a default method</td>
<td><a href="ch04.html" target="_blank">04. Interfaces</a></td>
</tr>
<tr>
<td colspan="2">
<b>Concurrency</b>
</td>
</tr>
<tr>
<td>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
</td>
<td><a href="ch27.html" target="_blank">27. Concurrency</a></td>
</tr>
<tr>
<td>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
</td>
<td><a href="ch31.html" target="_blank">A1. From Java 6/7 to Java 8</a><br/><a href="ch27.html" target="_blank">27. Concurrency</a></td>
</tr>
<tr>
<td>Use Executor, ExecutorService, Executors, Callable, and Future to execute tasks using thread pools</td>
<td><a href="ch26.html" target="_blank">26. Thread Basics</a></td>
</tr>
<tr>
<td>Use the parallel Fork/Join Framework</td>
<td><a href="ch28.html" target="_blank">28. Fork/Join Framework</a></td>
</tr>
<tr>
<td colspan="2">
<b>Localization</b>
</td>
</tr>
<tr>
<td>Describe the advantages of localizing an application and developing code that defines, reads, and sets the locale with a Locale object</td>
<td><a href="ch30.html" target="_blank">30. Localization</a></td>
</tr>
<tr>
<td>Build a resource bundle for a locale and call a resource bundle from an application</td>
<td><a href="ch30.html" target="_blank">30. Localization</a></td>
</tr>
<tr>
<td>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
</td>
<td><a href="ch21.html" target="_blank">21. Core Date/Time Classes</a></td>
</tr>
<tr>
<td>Format dates, numbers, and currency values for localization with the NumberFormat and DateFormat classes, including number and date format patterns</td>
<td><a href="ch31.html" target="_blank">A1. From Java 6/7 to Java 8</a></td>
</tr>
<tr>
<td>Work with dates and times across time zones and manage changes resulting from daylight savings</td>
<td><a href="ch22.html" target="_blank">22. Time Zones and Daylight Savings</a></td>
</tr>
<tr>
<td colspan="2">
<b>Java File I/O (NIO.2)</b>
</td>
</tr>
<tr>
<td>Operate on file and directory paths by using the Paths class
</td>
<td><a href="ch24.html" target="_blank">24. NIO.2</a></td>
</tr>
<tr>
<td>Check, delete, copy, or move a file or directory by using the Files class</td>
<td><a href="ch24.html" target="_blank">24. NIO.2</a></td>
</tr>
<tr>
<td>Recursively access a directory tree by using the DirectoryStream and FileVisitor interfaces</td>
<td><a href="ch31.html" target="_blank">A1. From Java 6/7 to Java 8</a></td>
</tr>
<tr>
<td>Find a file by using the PathMatcher interface, and use Java SE 8 I/O improvements, including Files.find(), Files.walk(), and lines() methods</td>
<td><a href="ch31.html" target="_blank">A1. From Java 6/7 to Java 8</a><br/><a href="ch25.html" target="_blank">25. Files and Streams</a></td>
</tr>
<tr>
<td>Observe the changes in a directory by using the WatchService interface
</td>
<td><a href="ch31.html" target="_blank">A1. From Java 6/7 to Java 8</a></td>
</tr>
<tr>
<td colspan="2">
<b>Lambda</b>
</td>
</tr>
<tr>
<td>Define and write functional interfaces and describe the interfaces of the java.util.function package</td>
<td><a href="ch08.html" target="_blank">08. Functional Interfaces</a></td>
</tr>
<tr>
<td>Describe a lambda expression; refactor the code that uses an anonymous inner class to use a lambda expression; describe type inference and target typing</td>
<td><a href="ch09.html" target="_blank">09. Lambda Expressions</a></td>
</tr>
<tr>
<td>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</td>
<td><a href="ch10.html" target="_blank">10. Java Built-In Lambda Interfaces</a></td>
</tr>
<tr>
<td>Develop code that uses a method reference, including refactoring a lambda expression to a method reference</td>
<td><a href="ch11.html" target="_blank">11. Method References</a></td>
</tr>
<tr>
<td colspan="2">
<b>Java Collections</b>
</td>
</tr>
<tr>
<td>Develop code that uses diamond with generic declarations</td>
<td><a href="ch06.html" target="_blank">06. Generics</a></td>
</tr>
<tr>
<td>Develop code that iterates a collection, filters a collection, and sorts a collection by using lambda expressions</td>
<td><a href="ch13.html" target="_blank">13. Iterating and Filtering Collections</a></td>
</tr>
<tr>
<td>Search for data by using methods, such as findFirst(), findAny(), anyMatch(), allMatch(), and noneMatch()</td>
<td><a href="ch15.html" target="_blank">15. Data Search</a></td>
</tr>
<tr>
<td>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</td>
<td><a href="ch17.html" target="_blank">17. Peeking, Mapping, Reducing and Collecting</a></td>
</tr>
<tr>
<td>Develop code that uses Java SE 8 collection improvements, including the Collection.removeIf(), List.replaceAll(), Map.computeIfAbsent(), and Map.computeIfPresent() methods</td>
<td><a href="ch31.html" target="_blank">A1. From Java 6/7 to Java 8</a></td>
</tr>
<tr>
<td>Develop code that uses the merge(), flatMap(), and map() methods on Java Streams</td>
<td><a href="ch17.html" target="_blank">17. Peeking, Mapping, Reducing and Collecting</a></td>
</tr>
<tr>
<td colspan="2">
<b>Java Streams</b>
</td>
</tr>
<tr>
<td>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</td>
<td><a href="ch12.html" target="_blank">12. Streams</a></td>
</tr>
<tr>
<td>Develop code that uses parallel streams, including decomposition operation and reduction operation in streams</td>
<td><a href="ch18.html" target="_blank">18. Parallel Streams</a></td>
</tr>
</table>
<p> </p>
</div>
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