Overview

Complete, trusted preparation for the Java Programmer II examOCP: Oracle Certified Professional Java SE 8 Programmer II Study Guide is your comprehensive companion for preparing for Exam 1Z0-809 as well as upgrade Exam 1Z0-810 and Exam 1Z0-813. With full coverage of 100% of exam objectives, this invaluable guide reinforces what you know, teaches you what you don't know, and gives you the hands-on practice you need to boost your skills. Written by expert Java developers, this book goes beyond mere exam prep with the insight, explanations and perspectives that come from years of experience. You'll review the basics of object-oriented programming, understand functional programming, apply your knowledge to database work, and much more. From the basic to the advanced, this guide walks you through everything you need to know to confidently take the OCP 1Z0-809 Exam and upgrade exams 1Z0-810 and 1Z0-813.Java 8 represents the biggest changes to the language to date, and the latest exam now requires that you demonstrate functional programming competence in order to pass. This guide has you covered, with clear explanations and expert advice.Understand abstract classes, interfaces, and class designLearn object-oriented design principles and patternsDelve into functional programming, advanced strings, and localizationMaster IO, NIO, and JDBC with expert-led database practiceIf you're ready to take the next step in your IT career, OCP: Oracle Certified Professional Java SE 8 Programmer II Study Guide is your ideal companion on the road to certification.Candidates for the Oracle, Java SE 8 Programmer II exam have a technical background and want to improve programming skills, or may be new to, object-oriented programming and Java. Java SE 8 Programmer II significantly changes the way Java Programmers write code. Earning a Java SE 8 certification gives you the tools to make the most of the new features within Java SE 8.- Java Class DesignImplement encapsulationImplement inheritance including visibility modifiers and compositionImplement polymorphismOverride hashCode, equals, and toString methods from Object classCreate and use singleton classes and immutable classesDevelop code that uses static keyword on initialize blocks, variables, methods, and classes- Advanced Java Class DesignDevelop code that uses abstract classes and methodsDevelop code that uses the final keywordCreate inner classes including static inner class, local class, nested class, and anonymous inner classUse enumerated types including methods, and constructors in an enum typeDevelop code that declares, implements and/or extends interfaces and use the Override annotation.Create and use Lambda expressionsTest 2 Covers following topics:- Generics and CollectionsCreate and use a generic classCreate and use ArrayList, TreeSet, TreeMap, and ArrayDeque objectsUse java.util.Comparator and java.lang.Comparable interfacesCollections Streams and FiltersIterate using forEach methods of Streams and ListDescribe Stream interface and Stream pipelineFilter a collection by using lambda expressionsUse method references with StreamsTest 3 Covers following topics:- Lambda Built-in Functional InterfacesUse the built-in interfaces included in the java.util.function package such as Predicate, Consumer, Function, and SupplierDevelop code that uses primitive versions of functional interfacesDevelop code that uses binary versions of functional interfacesDevelop code that uses the UnaryOperator interface- Java Stream APIDevelop code to extract data from an object using peek() and map() methods including primitive versions of the map() methodSearch for data by using search methods of the Stream classes including findFirst, findAny, anyMatch, allMatch, noneMatchDevelop code that uses the Optional classDevelop code that uses Stream data methods and calculation methodsSort a collection using Stream APISave results to a collection using the collect method and group/partition data using the Collectors classUse flatMap() methods in the Stream APITest 4 Covers following topics:- Exceptions and AssertionsUse try-catch and throw statementsUse catch, multi-catch, and finally clausesUse Autoclose resources with a try-with-resources statementCreate custom exceptions and Auto-closeable resourcesTest invariants by using assertions- Use Java SE 8 Date/Time APICreate 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 DurationWork with dates and times across timezones and manage changes resulting from daylight savings including Format date and times valuesDefine and create and manage date-based and time-based events using Instant, Period, Duration, and TemporalUnitTest 5 Covers following topics:- Java I/O FundamentalsRead and write data from the consoleUse BufferedReader, BufferedWriter, File, FileReader, FileWriter, FileInputStream, FileOutputStream, ObjectOutputStream, ObjectInputStream, and PrintWriter in the IO package.- Java File I/O (NIO.2)Use Path interface to operate on file and directory pathsUse Files class to check, read, delete, copy, move, manage metadata of a file or directoryUse Stream API with NIO.2- LocalizationRead and set the locale by using the Locale objectCreate and read a Properties fileBuild a resource bundle for each locale and load a resource bundle in an applicationTest 6 Covers following topics:- Java ConcurrencyCreate worker threads using Runnable, Callable and use an ExecutorService to concurrently execute tasksIdentify potential threading problems among deadlock, starvation, livelock, and race conditionsUse synchronized keyword and java.util.concurrent.atomic package to control the order of thread executionUse java.util.concurrent collections and classes including CyclicBarrier and CopyOnWriteArrayListUse parallel Fork/Join FrameworkUse parallel Streams including reduction, decomposition, merging processes, pipelines and performance.- Building Database Applications with JDBCDescribe the interfaces that make up the core of the JDBC API including the Driver, Connection, Statement, and ResultSet interfaces and their relationship to provider implementationsIdentify the components required to connect to a database using the DriverManager class including the JDBC URLSubmit 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

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