1Z0-829 Java 17 JPMS, Services, Module Path and Migration Guide
April 13, 2026
Study 1Z0-829 Java 17 JPMS, Services, Module Path and Migration: key concepts, common traps, and exam decision cues.
On this page
JPMS questions reward exact boundary thinking. The exam is usually asking what can be read, what can be exposed, and how code is discovered at runtime.
Module-choice map
If the stem is mainly about…
Better first instinct
dependency visibility
requires and module readability
package exposure
exports controls that decision
implementation discovery
service loading is likely the point
migration or deployment
classpath vs module path matters
What the exam is really testing
If the code or config shows…
Strong reading
module-info.java
boundaries and visibility are the real question
service terms
provider discovery and composition matter
classpath and module path together
migration and packaging assumptions matter
Common traps
Trap
Better rule
assuming requires also exports packages
readability and exports are different
treating service loading like ordinary inheritance