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Re: CheckBox in Column of JTable: Exception: java.lang.String cannot be cast to java.lang.Boolean

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It's possible that what appears to be a checkbox problem is a side-effect of a bigger problem.

What can I say. I am lost! Basically, one possibility is that my large project was working one second and it wasn't the next second. What could have gone wrong.

I'm going to walk down and try the following reasoning path.

Since I have been working on my toy project for months, I have a series of old/saved backup copies of my earlier projects.

Basically, it appears that 20 of my last projects are no longer working. They probably were working, and now they are giving the same error mentioned in my first posting above. I would not have saved non-working projects. Why would I save non-working projects. So, 20 of my backup copies are not working, but they were.

But, saved backup project 21 ago is still working! This is both my blessing and my monster.

Anyway, all of my web services are still working. Project 20 ago uses fewer web services than project 21 ago. I.E.: My problem is not with my web services. They all work.

Here is what I have done. After making the java code in the non-working project 20 ago look exactly like the java code in the working project 21 ago, I looked at a windiff of the two projects. Windiff allows me to compare all the files in the two projects. I use windiff a lot.

(This new project is used in option (2) below.)

The 2 projects only differ in the non-java code now, but the non-working project 20 ago is still not working!  
But, when I compare the resulting new modified old 20 project ago with the already working 21 project ago some of the "non-java code" still differs. Again, this new modified project is not working. It gives the same error message that I have been seeing when this problem first reared its head. I.E.: A checkbox in a JTable gives an error message.

At this juncture, I have three options to try. It appears to be the wisest things to try. I have partly started option (1). Options (1) and (3) are very similar.

(1) Throwing away the NetBeans form files produced by the NetBeans Design view, quickly copy and paste all the 'java code' from my most recent project that appears to have just stop working to the working old backup project 21 ago.

(2) Over write the 2 non-java files (dot xml files) in the new modified project with the non-java files in the old working 21 project ago.

(3) Carefully preserving the NetBeans form files produced by the NetBeans Design view, copy and paste all the 'java code' from my most recent project that appears to have just stop working to the working old backup project 21 ago.

That's what I'm going to try today. Again, I am lost! I feel I'm hitting a dead-end. Yesterday, I followed the recommended Internet solution for my checkbox in a JTable error message, and it did not work, see my earlier posts in this thread. Today, I'm going to try the above 3 options. It's the wisest thing I can try unless you have better ideas.

What do you think. Is NetBeans flaky. Could there be problems in the java/NetBeans libraries. Did I find a bug. Did I do something that I shouldn't have.

I'm still looking for a really good idea that will help me.

Thank you,

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CheckBox in Column of JTable: Exception: java.lang.String cannot be cast to java.lang.Boolean clusardi2k@aol.com - 2012-09-21 07:57 -0700
  Re: CheckBox in Column of JTable: Exception: java.lang.String cannot be cast to java.lang.Boolean clusardi2k@aol.com - 2012-09-21 08:01 -0700
    Re: CheckBox in Column of JTable: Exception: java.lang.String cannot be cast to java.lang.Boolean clusardi2k@aol.com - 2012-09-21 08:32 -0700
  Re: CheckBox in Column of JTable: Exception: java.lang.String cannot be cast to java.lang.Boolean Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-09-21 11:57 -0400
  Re: CheckBox in Column of JTable: Exception: java.lang.String cannot be cast to java.lang.Boolean Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2012-09-21 10:31 -0700
    Re: CheckBox in Column of JTable: Exception: java.lang.String cannot be cast to java.lang.Boolean clusardi2k@aol.com - 2012-09-21 11:43 -0700
      Re: CheckBox in Column of JTable: Exception: java.lang.String cannot be cast to java.lang.Boolean Lew <lewbloch@gmail.com> - 2012-09-21 12:21 -0700
        Re: CheckBox in Column of JTable: Exception: java.lang.String cannot be cast to java.lang.Boolean clusardi2k@aol.com - 2012-09-21 21:16 -0700
        Re: CheckBox in Column of JTable: Exception: java.lang.String cannot be cast to java.lang.Boolean clusardi2k@aol.com - 2012-09-21 21:23 -0700
          Re: CheckBox in Column of JTable: Exception: java.lang.String cannot be cast to java.lang.Boolean clusardi2k@aol.com - 2012-09-22 08:22 -0700
            Re: CheckBox in Column of JTable: Exception: java.lang.String cannot be cast to java.lang.Boolean Stuart <DerTopper@web.de> - 2012-09-23 16:44 +0200
  Re: CheckBox in Column of JTable: Exception: java.lang.String cannot be cast to java.lang.Boolean Lew <lewbloch@gmail.com> - 2012-09-21 10:32 -0700
    Re: CheckBox in Column of JTable: Exception: java.lang.String cannot be cast to java.lang.Boolean Roedy Green <see_website@mindprod.com.invalid> - 2012-09-22 15:37 -0700
  Re: CheckBox in Column of JTable: Exception: java.lang.String cannot be cast to java.lang.Boolean Roedy Green <see_website@mindprod.com.invalid> - 2012-09-22 15:30 -0700

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