Java Programmer II – OCP

Esta página tem o objetivo de abordar os tópicos da prova de certificação Oracle Certified Professional, Java SE 8 Programmer, código da prova 1Z0-809. Saiba como preparar, agendar e realizar a prova, para ver clique aqui.

Comandos utilizados nesta página foram executados no Java versão 8.

O conteúdo da prova para a certificação pode ser visualizado no site da Oracle no link abaixo:

☕ Java OCP

Java Class Design

✓ Implemente Ecapsulamento
✓ Implemente herança incluindo modificadores de visibilidade e composição
✓ Implemente Polimorfismo
✓ Sobrescrever os Métodos hashCode, equals e toString da Classe Object
✓ Criar e usar classes singleton e classes imutáveis
✓ Desenvolva código usando palavra-chave Static

Advanced Java Class Design

✓ Conceito de Classes e Métodos Abstratos
✓ Palavra chave FINAL
✓ Criar inner classes incluindo static inner class, local class, nested class e anonymous inner class
✓ Domine o tipo Enum
✓ Interfaces e anoteção @Override.
✓ Lambda

Generics and Collections

✓ Classes Genéricas e Classes Genéricas com Static
✓ Crie e use objetos com ArrayList, TreeSet, TreeMap e ArrayDeque
✓ Use java.util.Comparator and java.lang.Comparable interfaces
✓ Comparadores e Listas
✓ 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
✓ Resumo das interfaces

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.io package.

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

✓ Criando Threads de Trabalho Usando Runnable, Callable e ExecutorService
✓ Identificando Problemas Potenciais de Threading: Deadlock, Starvation, Livelock e 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