On Tue, 3 Aug 2021 08:23:19 GMT, Prasanta Sadhukhan <[email protected]>
wrote:
> In the JTable demo, if we double click on the first cell in the Favorite
> Number column, delete the value and click on some
> other cell, a java.lang.NullPointerException is getting thrown.
> The flaw is in the TableDemo's TableModel getColumnClass() method which
> queries the value of cell 0 in the target column, and returns its Class. This
> logic seems to be flawed - an NPE will be thrown when the value in cell 0 is
> null.
> Fix by checking for null.
Marked as reviewed by aivanov (Reviewer).
src/demo/share/jfc/SwingSet2/TableDemo.java line 557:
> 555: return obj.getClass();
> 556: }
> 557: return Object.class;
Shall the ternary conditional operator be used here?
Suggestion:
return obj != null ? obj.getClass() : Object.class;
-------------
PR: https://git.openjdk.java.net/jdk/pull/4969
