Running a class from inside a jar

[Derek Fountain]

Newbie one: I have a Hello.class in my local directory which prints "Hello"
and a World.class in ./org/test which prints "World". The World class is in
a package (org.test) which the Hello class imports and calls to. It works
fine.

Now I want to put the World class in a JAR. I create the JAR with "jar cf
World.jar World.class" which seems to work properly, but that leaves the
question of where do I put the JAR file and how do I run the JVM such that
it finds the class inside the JAR?

I tried putting the JAR in the local directory and running with a CLASSPATH
set to ., I tried putting the JAR in the org/test directory, I tried
putting the World.jar in the CLASSPATH, and several other permutations, but
I can't find the one that works. Can someone spell it out for me?

 

[Thomas Weidenfeller]

Newbie one:

Newbie questions are better handled in comp.lang.java.help.

Now I want to put the World class in a JAR. I create the JAR with "jar cf
World.jar World.class" which seems to work properly, but that leaves the
question of where do I put the JAR file and how do I run the JVM such that
it finds the class inside the JAR?

Read the documentation:

http://java.sun.com/j2se/1.5.0/docs/tooldocs/windows/java.html#-jar

/Thomas

 

[teste1]

Derek Fountain wrote:

Read the documentation:

http://java.sun.com/j2se/1.5.0/docs/tooldocs/windows/java.html#-jar

Thanks for a static link to a document that has now expired. This is super helpful for people who find this thread via google. Instead of providing a quick answer for a newb in need you issued the standard RTFM.

Here is the answer for any googlers who find this thread in the future.

jre -cp app.jar MainClass