Java.util.zip.ZipException Error

Question

I created a jar file, and put in C:\tools
C:\tools>java -jar myjar.jar is working fine
However, if I try to run myjar.jar in other directories, then I have problems.
I already set the classpath:
SET CLASSPATH=.;%CLASSPATH%;C:\tools\myjar.jar;
Here's the error. Any ideas???
C:\>java -jar myjar.jar
Exception in thread "main" java.util.zip.ZipException: The system cannot find th
e file specified
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(ZipFile.java:112)
at java.util.jar.JarFile.<init>(JarFile.java:117)
at java.util.jar.JarFile.<init>(JarFile.java:55)

Answer 1

You always need to specify a proper file name when you use the -jar switch. If you are not in c:\tools you have to run with "java -jar c:\tools\myjar.jar".
Setting the classpath in particular doesn't help becuase the file name given to the -jar switch will override all settings for classpath. http://java.sun.com/j2se/1.4/docs/tooldocs/findingclasses.html#userclass
But since you now have myjar.jar in your classpath, you can run the application from any directory with "java your.main.ClassName" :)