Thread: cmd java run issue

When I compile my java application in NetBeans there's no problem but when I try to run my application through the command prompt I get the following error:

Exception in thread "main" java.lang.NoClassDefFoundError: CarInsuranceCalc (wrong name: pkgCarInsuranceCalc/CarInsuranceCalc)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java :791)
at java.security.SecureClassLoader.defineClass(Secure ClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader .java:449)
at java.net.URLClassLoader.access$100(URLClassLoader. java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java: 361)
at java.net.URLClassLoader$1.run(URLClassLoader.java: 355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:4 23)
at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 56)
at sun.launcher.LauncherHelper.checkAndLoadMain(Launc herHelper.java:482)

I was used javac CarInsuranceCalc.java

Then java CarInsuranceCalc

I just tried java pkgCarInsuranceCalc.CarInsuranceCalc

Now I'm receiving the following:

Error: Could not find or load main class pkgCarInsuranceCalc.CarInsuranceCalc.class

(Actually doesn't matter tried the latest command in the src folder and it worked).