Christian,
On 10/16/25 1:48 AM, Christian Tallner wrote:
Most applications are today running on Apache 9 with Java 8.
We are planningit asa multi-step upgrade:
Phase 1 is a short term upgrade:
Step 1: Upgrade the Java environment on *Apache Tomcat 9.0.111*to Java
25 and the currently built applications as they are(most built with Java 8)
Step 2: Upgrade the applications to the same Java version as Tomcat use,
in this case Java 25
Be careful with upgrading Tomcat to Java 25 but not upgrading your
client applications (those not running within Tomcat) if you are using
TLS or other cryptography. Between Java 8 and Java 25, lots of
algorithms were disabled and you may find that the two cannot
communicate unless you re-enable some things in Java 25 to make them
backward-compatible.
You may also need to add some libraries to your application depending
upon exactly what kinds of things you use. For example, if you use
anything XML-RPC-related such as SOAP, then you will need to add
libraries which used to be included along with the standard JVM library
but now are shipped separately.
Phase 2 is a long term upgrade, and will be a larger project since it
requires to move away from javax servlets:
Mark already answered the remainder of your question.
-chris
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