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Oracle Java SE 17 Developer Certification Hub

200 approved locked-bank questions and the matching study surfaces.

Locked study sections
Section 1

Java types, objects, and object-oriented design

Section 2

Collections, generics, and functional programming

Section 3

Streams and parallel processing

Section 4

Control flow, exceptions, and resource management

Section 5

Date, time, text, numbers, and localization

Section 6

Concurrency

Section 7

I/O and NIO.2

Section 8

Modules, packaging, and deployment

Section 9

JDBC database access

Section 10

Java SE 17 language features and API reasoning