Mark Thomas wrote:
On 04/02/2013 13:41, Caldarale, Charles R wrote:
From: Mark Thomas [mailto:ma...@apache.org] Subject: Re: Tomcat and
Sun/Oracle Java 7
What is the status of Tomcat vs Sun/oracle Java 7 ? I vaguely
remember seeing some messages on this list about some kind of
incompatibility.
There are no known issues.
Although there are no issues with running Tomcat under Java 7, I was
under the impression that Tomcat 7 and below could not be built with
Java 7 due to JRE interface incompatibilities.
Correct. JDBC. Again.
Ok, then sorry about my persistent deep lack of knowledge of Java-things, but are the
following assumptions correct ? (and if not, why ?)
- tomcat 6 will run fine under a Sun/Oracle Java 1.6 JVM
- tomcat 7 will run fine under a Sun/Oracle Java 1.6 JVM
- tomcat 6 will run fine under a Sun/Oracle Java 1.7 JVM
- tomcat 7 will run fine under a Sun/Oracle Java 1.7 JVM
- tomcat 6 will run fine under an OpenJDK Java 1.7 JVM
- tomcat 7 will run fine under an OpenJDK Java 1.7 JVM
and, there may (or may not) be problems compiling a servlet that uses JDBC under a
Sun/Oracle Java 1.7 JDK, but assuming that this servlet does not use JDBC in any way :
- the classes of a servlet that has been compiled under a Sun/Oracle Java 1.6 JDK will run
fine under Tomcat 6 and a Sun/Oracle Java 1.7 JVM
- the classes of a servlet that has been compiled under a Sun/Oracle Java 1.7 JDK will run
fine under Tomcat 6 and a Sun/Oracle Java 1.6 JVM
- the classes of a servlet that has been compiled under a Sun/Oracle Java 1.6 JDK will run
fine under Tomcat 6 and a OpenJDK Java 1.6 JVM
- the classes of a servlet that has been compiled under a Sun/Oracle Java 1.6 JDK will run
fine under Tomcat 6 and a OpenJDK Java 1.7 JVM
or alternatively, is it so that to run a servlet compiled under some JDK only works under
the corresponding JRE/JVM ?
(or any other simpler rule-of-thumb rather than my exhaustive kind of list
above)
I apologise if these are more Java-level questions than Tomcat-level questions, but as a
sysadmin I have to decide which JVM to install, to run Tomcat along with webapps which I
receive pre-compiled, and other non-Tomcat Java applications also precompiled.
And I have to decide this for several Linux and Windows platforms, whereas I am told that
for some of these platforms at least, the pre-packaged versions of Java and/or Tomcat are
not always the most recent ones. Hence my confusion.
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