Java SE 8 Programmer II



Java SE8 Programmer II



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Exam Number: 1Z0-809
Exam Product Version: Java SE
Dauer: 150 Minuten
Anzahl der Fragen: 77
Erforderliche Punktzahl: 65%
Gültig für: This exam has been written for the Java SE 8 release
Format: Multiple Choice
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Exam Preparation:

  • Vorbereitungsworkshop zur Java SE 11 Developer Zertifizierung

    • Additional Information & Resources


    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 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 atOverride 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.iopackage.
    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
    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