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From: Eric Sosman <esosman@comcast-dot-net.invalid>
Newsgroups: comp.lang.java.programmer
Subject: Re: Where is the source?
Date: Fri, 3 Nov 2017 10:31:17 -0400
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On 11/3/2017 8:55 AM, Andreas Leitgeb wrote:
> Eric Douglas <e.d.programmer@gmail.com> 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)

     ... because it's not part of "Java SE," but part of Snoracle's
proprietary implementation thereof.

> 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

     ... which might or might not resemble Sun's, but could be worth
studying.

-- 
esosman@comcast-dot-net.invalid
Eleven hundred seventy-four days to go.