Oracle Java SE 21 Developer Professional 1z0-830 Certified Exam Dumps

1z0-830 Exam Dumps

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Certification Provider:	Oracle
Exam Code / Number:	1z0-830
Exam Name:	Java SE 21 Developer Professional
Exam Questions:	85
Last Updated:	Jul 07, 2026
Corresponding Certification:	Java SE

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Oracle 1z0-830 Exam Syllabus Topics:

Section	Objectives
Topic 1: Advanced Java Features (Java SE 21)	- Modern language features 1. Records and record patterns 2. Sealed classes 3. Virtual threads (Project Loom) 4. Pattern matching for switch
Topic 2: Core APIs	- Java standard library usage 1. Streams and functional programming 2. Collections Framework 3. Date and Time API
Topic 3: Java Language Fundamentals	- Java syntax and language structure 1. Data types, variables, and operators 2. Control flow statements
Topic 4: Object-Oriented Programming	- Core OOP principles 1. Abstract classes and interfaces 2. Encapsulation, inheritance, polymorphism
Topic 5: Exception Handling and Debugging	- Error handling mechanisms 1. Try-with-resources 2. Checked vs unchecked exceptions
Topic 6: Concurrency and Multithreading	- Thread management 1. Virtual threads and structured concurrency concepts 2. Thread lifecycle and synchronization
Topic 7: Database Connectivity (JDBC)	- Database interaction 1. JDBC API usage 2. SQL execution and result handling
Topic 8: Input/Output and File Handling	- NIO and file operations 1. Serialization basics 2. File, Path, and Streams APIs