Oracle Certified Professional (OCP) Exam Preparation

OCP(Oracle Certified Professional) Exam Preparation

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Java SE 11 Programmer– 1Z0-819


  • Credential Awarded: Oracle Certified Professional Java SE 11 Developer
  • Exam Number: 1Z0-819
  • Target Audience: Java Developers
  • Platform: Delivered via Pearson VUE
  • Exam Duration: 90 minutes
  • Number of Questions: 50
  • Passing Score: 68%
  • Digital Badge: Oracle Certified Professional Java SE 11 Developer

Exam Topics


Working with Java data types


  • Use primitives and wrapper classes, including, operators, parentheses, type promotion and casting
  • Handle text using String and StringBuilder classes
  • Use local variable type inference, including as lambda parameters

Controlling Program Flow


  • Create and use loops, if/else, and switch statements

Java Object-Oriented Approach


  • Declare and instantiate Java objects including nested class objects, and explain objects' lifecycles (including creation, dereferencing by reassignment, and garbage collection)
  • Define and use fields and methods, including instance, static and overloaded methods
  • Initialize objects and their members using instance and static initialiser statements and constructors
  • Understand variable scopes, apply encapsulation and make objects immutable
  • Create and use subclasses and superclasses, including abstract classes
  • Utilize polymorphism and casting to call methods, differentiate object type versus reference type
  • Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
  • Create and use enumerations

Exception Handling


  • Handle exceptions using try/catch/finally clauses, try-with-resource, and multi-catch statements
  • Create and use custom exceptions

Working with Arrays and Collections


  • Use generics, including wildcards
  • Use a Java array and List, Set, Map and Deque collections, including convenience methods
  • Sort collections and arrays using Comparator and Comparable interfaces

Working with Streams and Lambda expressions


  • Implement functional interfaces using lambda expressions, including interfaces from the java.util.function package
  • Use Java Streams to filter, transform and process data
  • Perform decomposition and reduction, including grouping and partitioning on sequential and parallel streams

Java Platform Module System


  • Deploy and execute modular applications, including automatic modules
  • Declare, use, and expose modules, including the use of services

Concurrency


  • Create worker threads using Runnable and Callable, and manage concurrency using an ExecutorService and java.util.concurrent API
  • Develop thread-safe code, using different locking mechanisms and java.util.concurrent API

Java I/O API


  • Read and write console and file data using I/O Streams
  • Implement serialization and deserialization techniques on Java objects
  • Handle file system objects using java.nio.file API

Secure Coding in Java SE Application


  • Develop code that mitigates security threats such as denial of service, code injection, input validation and ensure data integrity
  • Secure resource access including filesystems, manage policies and execute privileged code

Database Applications with JDBC


  • Connect to and perform database SQL operations, process query results using JDBC API

Localization


  • Implement Localization using Locale, resource bundles, and Java APIs to parse and format messages, dates, and numbers

Annotations


  • Create, apply, and process annotations

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