What is suitable version(s) for Dymamic web module with JavaSE 1.6 SDK, Tomcat 6 x64?

Question

We need maintain old system and research arround. I am using Windows 10 x64, Eclipse IDE 2022-12, JDK 1.6, Tomcat 6 and Spring 2.5.6 (include spring-jms-2.5.6.jar , spring-orm-2.5.6.java , spring-context-support-2.5.6.jar , spring-tx-2.5.6.jar , spring-aop-2.5.6.jar , spring-web-2.5.6.jar , spring-jdbc-2.5.6.jar , spring-beans-2.5.6.jar , spring-core-2.5.6.jar , spring-context-2.5.6.jar ), Ant build inside Eclipse IDE 2022-12.

. What is suitable version(s) for Dymamic web module with JavaSE 1.6 SDK, Tomcat 6 x64? Please give me official/reference links about these if you know.

Given the fact that tomcat 7 was released back in 2010, I would say none of them. Given the fact that it is a legacy system, and that you have to maintain it, [this post](https://stackoverflow.com/questions/3985916/dynamic-web-module-option-in-eclipse) says 2.5. — Turing85, Jan 05 '23 at 02:07
"*Please give me official/reference links about these if you know.*" - [Questions asking us to recommend or find a book, tool, software library, tutorial or other **off-site resource** are **off-topic** for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and what has been done so far to solve it.](https://stackoverflow.com/help/on-topic) — Turing85, Jan 05 '23 at 02:08
I already read it before you given me. My question is very specific, no vauge. As you know, you given link with answer what not include reference document link(s). — Vy Do, Jan 05 '23 at 02:08