Below is my 1st Java pgm from an online course. I'm getting the error on the last line. I think it has to do with my environment, any help would be appreciated:

class BigDebt {
public static void main (String[] arguments) {
int debt = 446000000;
debt = debt / 1440;
System.out.println("A minute's worth of debt is $" + debt);
// C:\jv1\Unit2\bigdebt1>java BigDebt
// Exception in thread "main" Java.lang.NoClassDefFoundError: BigDebt

Thanks in advance,