// THIS LINE IS INCORRECT AND I DON'T UNDERSTAND WHY.
THE METHOD set Element At IS // SIMLY INACCESSIBLE list1Model()Element At("Task is opened", list1Selected Index()); After changing your model's data you must call fire Contents Changed (inherited from Abstract List Model) to notify listeners (including the JList) that something has changed - something like fire Contents Changed(this, i, i); ...
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This week's question comes to us from William: William, you definitely aren't the only person having issues with keyboard shortcuts, particularly after updating to i OS 8.