Oracle Java SE 8 Programmer Associate Certification in Qatar

Java Platform Overview

• Explaining how platform independence is achieved
• Differentiating between Java ME, SE, and EE platforms
• Evaluating Java libraries, middleware, and database options
• Discussing the evolution of the Java language

Java Syntax and Class Review

• Creating basic Java classes and primitive variables
• Using operators, strings, if-else, and switch statements
• Implementing loops: while, do-while, for, and enhanced for
• Constructing arrays, fields, constructors, and methods

Encapsulation and Subclassing

• Applying encapsulation in Java class design
• Modeling business problems using Java classes
• Ensuring class immutability
• Developing and utilizing Java subclasses
• Implementing method overloading

Overriding Methods, Polymorphism, and Static Classes

• Using access levels: private, protected, default, and public
• Overriding methods and employing virtual method invocation
• Specifying variable arguments with varargs
• Using the instanceof operator and performing upward/downward casts
• Implementing the singleton design pattern

Abstract and Nested Classes

• Designing versatile base classes using abstract classes
• Building abstract Java classes and their subclasses
• Effectively applying the final keyword
• Differentiating between top-level and nested classes

Interfaces and Lambda Expressions

• Defining and extending Java interfaces
• Choosing between interface and class inheritance
• Utilizing default methods, anonymous inner classes, and lambda expressions

Collections and Generics

• Creating custom generic classes
• Using the type inference diamond and creating collections with generics
• Implementing ArrayList, TreeSet, HashMap, and Deque
• Ordering collections

Collections Streams and Filters

• Explaining the Builder pattern
• Iterating through collections using lambda syntax
• Filtering collections using lambda expressions and method references
• Defining pipelines with lambdas and collections

Lambda Built-in Functional Interfaces

• Listing built-in interfaces in java.util.function
• Using core interfaces: Predicate, Consumer, Function, Supplier
• Employing primitive and binary versions of base interfaces

Lambda Operations

• Extracting data from objects using map
• Describing stream operations, the Optional class, and lazy processing
• Sorting streams and saving results to collections with the collect method
• Grouping and partitioning data using the Collectors class

Exceptions and Assertions

• Explaining the purpose of Java exceptions
• Utilizing try, throw, catch, multi-catch, and finally clauses
• Autoclosing resources with try-with-resources
• Identifying common exception classes and categories
• Creating custom exceptions and testing invariants with assertions

Java Date/Time API

• Creating and managing date-based and time-based events
• Combining date and time into single objects
• Handling dates and times across different time zones
• Defining timestamps, periods, and durations
• Formatting local and zoned dates and times

I/O Fundamentals

• Understanding the basics of input and output in Java
• Reading and writing data from the console
• Using streams to read and write files
• Serializing and deserializing objects

File I/O (NIO.2)

• Using the Path interface for file and directory paths
• Utilizing the Files class to check, delete, copy, or move files or directories
• Implementing Stream API with NIO2

Concurrency

• Describing task scheduling by the operating system
• Creating worker threads using Runnable and Callable
• Executing tasks concurrently with ExecutorService
• Identifying threading issues and managing atomicity
• Using synchronized and concurrent atomic classes
• Utilizing java.util.concurrent collections

The Fork-Join Framework

• Understanding parallelism and the need for Fork-Join
• Implementing work stealing, RecursiveTask, and parallel streams
• Calculating values using reduce and understanding reduction
• Decomposing tasks and merging results for parallel streams

Database Applications with JDBC

• Understanding the layout of the JDBC API
• Connecting to databases using JDBC drivers
• Submitting queries and retrieving results
• Performing CRUD operations with JDBC

Localization

• Exploring the benefits of localizing applications
• Defining locale representation and using Locale objects
• Creating and using resource bundles in applications
• Switching locales for resource bundles