Lemonpress’s Weblog

There are odd dependencies between tag handlers and POJOs (or Java Beans) that are used by tag handlers:

if the POJO/JavaBean already exists as a compiles .class file and we created a new tag handler that uses it

The tag handler won’t compile!

Solution:

• delete dependent .class files in the file browser
• deselect “build a”
• recompile the project (in Eclipse choose Project -> Build Project)

And in the future make sure that
you turned off “Build Automatically”

xxx.jar – a library of useful classes packaged in a single archive file.

using libraries in your project is dead-easy.

1. create classes, e.g. a collection of custom tag handlers
2. zip them up using jar cf mytags.jar *
   or jar cf mytags.jar list-of-files.class
3. copy mytags.jar into lib/ dir of another project (see More)
4. use them

(more…)

First, navigate to the progectname dir

jar cvf projectame.war *

jar cf web-app.war *
(What’s the difference between cvf and cf?)

jar cf ear_app.ear web-app.war META-INF
(to deploy on JBoss)

* means “all files in this dir”

(more…)