Thread: issue with scanner class-resource leak

Hi everyone, i am new to the forum. I am currently in the middle of an Oracle course and i am having an issue with one of my assignments.
It runs fine in Eclipse but not in the Cmd line. I have searched for days on how to fix the issue with no results so i am hoping that someone here may be kind enough to help me.

public class Calc {

public static void main(String[] args) {

Scanner items = new Scanner(System.in); // resource error occurs on this line "resource leak:'items' is never closed
double firstnumber, secondnumber, thirdnumber, answer;
System.out.println("Enter first number");
firstnumber = items.nextDouble();
System.out.println("Enter second number");
secondnumber = items.nextDouble();
System.out.println("Enter third number");
thirdnumber = items.nextDouble();
answer = firstnumber + secondnumber + thirdnumber;
System.out.println(answer);

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Hi I am running windows 8, no error in eclipse, error from cmdline pasted below

C:\Users\user1\Desktop\Java\Eclipes projects\Assignment 2\src\Calc>javac Calc.ja
va

C:\Users\user1\Desktop\Java\Eclipes projects\Assignment 2\src\Calc>java Calc
Exception in thread "main" java.lang.NoClassDefFoundError: Calc (wrong name: Cal
c/Calc)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java :800)
at java.security.SecureClassLoader.defineClass(Secure ClassLoader.java:14
2)
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$1.run(URLClassLoader.java: 355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:4 25)
at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 58)
at sun.launcher.LauncherHelper.checkAndLoadMain(Launc herHelper.java:482)


C:\Users\user1\Desktop\Java\Eclipes projects\Assignment 2\src\Calc>