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Including multiple JARs in javac -classpath

Greenhorn

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posted 14 years ago

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Hello,

I'm trying to use the Str class from the jr.jar library when working with a servlet - but the second jar file listed in the command below doesn't seem to get picked up.

$ javac -cp ~/tomcat/apache-tomcat-6.0.20/lib/servlet-api.jar:~/tomcat/apache-tomcat-6.0.20/lib/jr.jar -d classes src/filename.java

Any thoughts? Thanks much.

Ankit Garg

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posted 14 years ago

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Can you re-check if the jar is in the folder that you specified. Also can you show us the code in which you are trying to access a class from that jar. Maybe you've made a mistake in capitalization or something else...

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Riley Thomas

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posted 14 years ago

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The jr.jar file is definitely located in the /lib directory.

Here is what I'm trying to compile:

The error is: src/NowServlet.java:4: package com.javaranch.common does not exist
import com.javaranch.common.*;
^
1 error

Jesper de Jong

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posted 14 years ago

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Riley Thomas wrote:The jr.jar file is definitely located in the /lib directory.

I guess you mean the ~/tomcat/apache-tomcat-6.0.20/lib directory, as that's what you're putting in the classpath?

It looks like you're using a Unix-like operating system (maybe Linux or Mac OS X). Check if the jr.jar file contains what you expect. Try this command to list what's inside the jar:

jar tvf ~/tomcat/apache-tomcat-6.0.20/lib/jr.jar

It should show you a list of the files and directories in the jar file. Does it contain a directory com/javaranch/common?

Riley Thomas

Greenhorn

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posted 14 years ago

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I double-checked the file and it does contain the com/javaranch/common directory.

Correct, I am using OS X with Java 1.5.

I've found that if I reverse the order of the jar files - typing:
$ javac -cp ~/tomcat/apache-tomcat-6.0.20/lib/jr.jar:~/tomcat/apache-tomcat-6.0.20/lib/servlet-api.jar -d classes src/***.java - it returns errors regarding the javax.servlet classes; so whatever comes second in that classpath list doesn't work.

subodh gupta

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posted 14 years ago

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Hi,

Please try this:

it worked for me

http://subodh-gupta.blogspot.com

Riley Thomas

Greenhorn

Posts: 13

posted 14 years ago

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...and it worked for me too - thanks!

Time to start using ANT now