java 8 course ||

This java 8 study material is for professional level java programmer.

For associate level java 8 tutorial, please visit java 8 course I.

Java 8 introduced lambda and stream api, which changes java landscape. If Object oriented makes java mighty, functional programming gives java magic -- essence of interface and anonymous class are abstracted into lambda expressions. The code became more concise and assertive. For example, Collections can be processes as a stream (sometimes in parallel), lambda expression also changes how you write the concurrency, NIO2 code in the future, forever -- you now write spells instead of for loops.

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For this study material of java 8 features, the essential classes are located in java.util.stream and java.util.function packages.

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

Java 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

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 @Override annotation

     Create and use Lambda expressions

Test and Quiz