Oracle Java 21 Certification 1Z0-830: Full Course Overview

Описание: Preparing for the Oracle Certified Professional: Java SE 21 Developer exam (1Z0-830)? This video walks you through the complete OnLevelUp Java 21 course: 10 chapters mapped to the 10 official exam objectives, code-driven lessons, chapter quizzes, full-length mock exams and a downloadable PDF book.

▶ Start the course: https://onlevelup.com/en/software-dev...

In this video you'll learn:
✔ The 10 exam objectives of the Oracle Java SE 21 Developer certification (1Z0-830)
✔ Java 21 features you must master: records, sealed classes, pattern matching for switch, text blocks and virtual threads
✔ Core Java topics: java.time, String and StringBuilder, OOP, exceptions, collections, streams and lambdas, modules, concurrency, Java I/O and localization
✔ A real exam-style code challenge: can you predict the output?
✔ A simple study method: learn, quiz, mock exams, review
✔ Pricing: $39 one-time with lifetime access, or a subscription from $6.58/month for every OnLevelUp course

Who is this Java 21 course for?
Backend and full-stack Java developers, students and junior developers, and anyone upgrading from Java 8, 11 or 17. There is no formal prerequisite; Oracle expects solid Java syntax and the ability to read code and predict what it does.

⏱ Chapters
0:00 Oracle Certified Professional: Java SE 21 Developer (1Z0-830)
0:17 Course curriculum: 10 chapters, 10 exam objectives
0:30 Date, time, text, numbers and program flow
0:44 Object-oriented concepts and exceptions
0:58 Arrays, collections, streams and lambdas
1:13 Modules, concurrency and virtual threads
1:28 Java I/O API and localization
1:42 Code challenge: what does this code print?
2:02 The study method
2:20 Who this course is for
2:38 Pricing
2:50 Start now

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