What is a container mean?

[JTL.zheng]

It said that Tomcat is all servlets' container.
what is this container mean?
can I say that JVM is Tomcat or other Java app's container?
or OS is JVM's container?

 

[Guest]

It said that Tomcat is all servlets' container.
what is this container mean?
can I say that JVM is Tomcat or other Java app's container?
or OS is JVM's container?

Servlets run in a servlet container.
A servlet container runs in a JVM.
A JVM runs in an OS.

But:

A servlet container only runs servlets (incl. those
generated by JSP pages).

A JVM runs servlet containers and many other types
of Java apps.

An OS runs JVM's and many other types of executables.

Arne

 

[JTL.zheng]

Thank you very much.. : )