Basic Knowledge (2)-Java SE 8 Programmer II (1z0-809)

Source: Internet
Author: User
Tags stream api java se

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 Supplie R
    • 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 () Metho D
    • 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 of merge () and FlatMap () methods of 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 Loc Aldate, LocalTime, LocalDateTime, Instant, Period, and Duration
    • Work with dates and times across timezones and manage changes resulting from daylight savings including Format date and Ti MES 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

Java Concurrency

    • Create worker threads using Runnable, callable and use a 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 I Nterfaces 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


    • Describe the advantages of localizing an application
    • 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

Basic Knowledge (2)-Java SE 8 Programmer II (1z0-809)

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