Oracle Certification : OCP SE21 Developper 1z0-830 part2

THE OCP EXAM TOPICS COVERED IN THIS PRACTICE TEST INCLUDE THE FOLLOWING:

Utilizing Java Object-Oriented Approach

• Declare and instantiate Java objects, including nested classes, and explain their lifecycle (creation, reassigning references, and garbage collection).

• Create classes and records; define and use instance and static fields, methods, constructors, and initializers.

• Understand variable scopes, apply encapsulation, and create immutable objects. Use local variable type inference.

• Implement inheritance, including abstract and sealed types, and override methods (including those from the Object class).

• Apply polymorphism, differentiate between object type and reference type, and perform reference type casting.

• Use pattern matching with the instanceof operator and enhanced switch.

• Create and use interfaces, including functional interfaces, and utilize private, static, and default interface methods.

• Create and use enum types with fields, methods, and constructors.

Working with Arrays and Collections

• Create Java arrays, and work with List, Set, Map, and Deque collections.

• Add, remove, update, retrieve, and sort elements in collections.

Working with Streams and Lambda Expressions

• Use object and primitive Java Streams with lambda expressions to filter, transform, process, and sort data.

• Apply functional interfaces to support stream operations.

• Perform decomposition, concatenation, reduction, grouping, and partitioning on both sequential and parallel streams.

Handling Exceptions

• Handle exceptions using try/catch/finally, try-with-resources, and multi-catch blocks.

• Create and manage custom exceptions.

Implementing Localization

• Implement localization using Locale and resource bundles.

• Parse and format messages, dates, times, and numbers, including currency and percentages.

Managing Concurrent Code Execution

• Create and manage both platform and virtual threads using Runnable and Callable.

• Use Executor services and concurrent APIs to control thread lifecycle and execute tasks.

• Write thread-safe code using synchronization, locking mechanisms, and concurrent data structures.

• Process Java collections concurrently and use parallel streams for high-performance data processing.

Using Java I/O API

• Read and write data using console and file I/O streams.

• Serialize and deserialize Java objects.

• Construct, traverse, read, and write Path objects and their properties using the java.nio.file API.