menu_book Course Curriculum (Apex Complete Course) expand_more
Core Syntax
Classes & Interfaces
SOQL & SOSL
DML
Triggers
Asynchronous Apex
Security & Sharing
Lists
Learn Lists in Apex with a construct-specific explanation, a unique example, a practical boundary, and a mastery check.
10 min read
•
Beginner
Lists is an atomic Apex topic inside Core Syntax. The example below uses the actual construct named by the lesson rather than a generic placeholder.
Focus on what Lists changes: the input, binding, control path, object state, collection, runtime effect, or language contract. Then alter one value and verify that the behavior changes for a reason specific to this feature.
Topic-specific example
apex-01-04-lists.cls
apex
Try It Live
List<Integer> ids = new List<Integer>{3,5,8};
System.debug(ids[1]);
Edge case / engineering note
Check the input collection shape, whether the operation mutates or returns a new value, and what happens for an empty collection.
Content source & attribution
Original Syntaxis Content · Original Syntaxis Content