Скачать или смотреть java se oracle certification

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sure! the oracle certified professional, java se 11 developer certification (ocp) is a professional certification for java developers that demonstrates your proficiency in java se (standard edition). this tutorial will provide an overview of the certification, the topics covered, and a code example to help you understand some key concepts.

overview of java se oracle certification

#### certification levels
1. **oracle certified associate (oca)**: this is the first level certification that focuses on foundational java se knowledge.
2. **oracle certified professional (ocp)**: this is the advanced level certification that focuses on more complex java concepts and best practices.

exam structure
**exam code**: 1z0-819 (for java se 11)
**number of questions**: 50
**passing score**: approximately 65% (may vary, check the official website)
**duration**: 150 minutes
**format**: multiple choice and multiple answer
**topics covered**:
java basics and data types
control flow statements
object-oriented programming concepts
exception handling
java apis (collections, streams, etc.)
lambda expressions and functional programming
modules and the java platform module system (jpms)
concurrency
i/o fundamentals
jdbc (java database connectivity)

preparation tips
1. **study the official documentation**: familiarize yourself with the java se documentation and api.
2. **practice coding**: write code to reinforce concepts, especially oop, collections, and streams.
3. **take practice exams**: use mock exams to get familiar with the exam format.
4. **join study groups**: engage with other candidates to discuss topics and share resources.

code example: object-oriented programming in java
here's a simple example illustrating object-oriented programming concepts in java, such as classes, objects, inheritance, and polymorphism.



explanation of the code
1. **classes and objects**: `animal` is a base class, and `dog` and ` ...

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