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Apex Complete Course / Core Syntax

switch on

Learn switch on in Apex with a construct-specific explanation, a unique example, a practical boundary, and a mastery check.

10 min read • Beginner

switch on 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 switch on 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-01-09-switch-on.cls
apex Try It Live
String status='paid'; switch on status { when 'new' { System.debug(0); } when 'paid' { System.debug(1); } when else { System.debug(-1); } }
Edge case / engineering note

Change the key input in this Apex example and predict the result first; the named construct should be the reason the behavior changes.

Content source & attribution
Original Syntaxis Content · Original Syntaxis Content