Path: csiph.com!eternal-september.org!feeder.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Andreas Leitgeb Newsgroups: comp.lang.java.programmer Subject: Re: Where is the source? Date: Fri, 3 Nov 2017 12:55:02 -0000 (UTC) Organization: A noiseless patient Spider Lines: 23 Message-ID: References: <41184dc1-97f9-46db-be03-b5685f8e3304@googlegroups.com> Reply-To: avl@logic.at Injection-Date: Fri, 3 Nov 2017 12:55:02 -0000 (UTC) Injection-Info: reader02.eternal-september.org; posting-host="76b7cc834fc6acb7456aa861e6482d76"; logging-data="18825"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX199FGadwZymrdVfWHzC+AeH" User-Agent: slrn/1.0.2 (Linux) Cancel-Lock: sha1:jA/aY9XJiKZC+dMHU5mAkpwgXEI= Xref: csiph.com comp.lang.java.programmer:37639 Eric Douglas wrote: > I'm calling javax.swing.JTable.convertColumnIndexToModel and it's crashing. > All it tells me is > Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException > at sun.swing.SwingUtilities2.convertColumnIndexToModel(SwingUtilities2.java:1988) > The column model is not null. The column should not be null. It would really help if I could see the line that's crashing. Last time I installed Oracle JDK (1.8.0_131), then its $JAVA_HOME had a file named src.zip in it. (but version 8 doesn't seem to have that particular class) If you're using openjdk in Linux (e.g. debian or ubuntu), then you might want to also install package "openjdk-9-source" As it seems, both openjdk-8-source and openjdk-9-source each have a src.zip that does contain sun/swing/SwingUtilities2.java $ unzip -l /usr/lib/jvm/openjdk-8/src.zip | grep SwingUtilities2.java 77994 2017-03-10 08:20 sun/swing/SwingUtilities2.java $ unzip -l /usr/lib/jvm/openjdk-9/src.zip | grep SwingUtilities2.java 76468 2016-04-11 19:00 sun/swing/SwingUtilities2.java Happy debugging.