Hey all

I have to use an external library itext-1.4.5.jar located at /usr/share/java in a program HelloWorld.java

I had compiled the program as
$javac -classpath /usr/share/java/itext-1.4.5.jar HelloWorld.java

and it compiled properly

But I dont know how to run it.

If I give

$java -classpath /usr/share/java/itext-1.4.5.jar HelloWorld

I get these errors

Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorld
Caused by: java.lang.ClassNotFoundException: HelloWorld
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
Could not find the main class: HelloWorld. Program will exit.

Could someone please tell me what is wrong?

Yes, you are overriding the default classpath; as a consequence, javac does not look in the current working directory so it does not find your classfile. Use -cp .;/usr/share/etc. instead

It worked.Thank you