niente mi da come errore (eclipse)
codice:
Exception in thread "main" java.lang.NoClassDefFoundError: cal
Caused by: java.lang.ClassNotFoundException: cal
	at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Ma forse va importato prima il package math?