[json-lib-user] 1.5 API within jdk1.3 version, generating "no such method" error

Hello Json-lib group member,

I searched a little for any similar post to this but in vain. Sorry if my
search was not sufficient and this post is redundant.

Using json-lib-2.4-jdk13.jar, I encountered an error, running an application
on JVM 1.4. I tracked down in the source and now am able to point out where
(net.sf.json.AbstractJSON.removeInstance(Object)) an Java 1.5 API used in
this library. The java.lang.ThreadLocal.remove() is a method available only
since 1.5. Though it is used in the above mentioned method.

Can anyone confirm me if my following correction is functionnally OK?

abstract class AbstractJSON {
   private static class CycleSet extends ThreadLocal {
      // ... add the following method
      public void remove() {
      set(initialValue());
      }
   }
   // ...


I wonder if you manage to compile the jdk1.3 version library without any
compilation error?

Best regards,
Masaru