What does the following operator - (? do something : do something) mean?

Question

What does the following code do?

Tracker t = (trackerId == TrackerName.APP_TRACKER) ? analytics.newTracker(PROPERTY_ID)
                : (trackerId == TrackerName.GLOBAL_TRACKER) ? analytics.newTracker(R.xml.global_tracker)
                : analytics.newTracker(R.xml.ecommerce_tracker);

Answer 1

condition ? //block1 : //block2 is the same thing as if (condition) { //block1 } else { //block2 }

Answer 2

Your expression shall be a ? b : c. This means: If a, then do b. Otherwise do c.

What you have here is a nested version of this syntax.