Java (Error: Could not find or load main class ShoppingCart)

Question

Please friends assist me in solving this error.

1) I created a java file named "ShoppingCart.java" and saved it to this folder "C:\javafundamentals\ex03"

This is the codes inside the "ShoppingCart.java" file:
---------------------------------------------------------------------
package ex03_exercise;

public class ShoppingCart {
public static void main(String[] args) {
System.out.println("Welcome to the Shopping Cart!");
}
}
---------------------------------------------------------------------

2) I used windows command prompt to change to the directory that contains the "ShoppingCart.java" file:

C:\Users\AKOHPEM>cd C:\javafundamentals\ex03

3) I used windows command prompt to compile it as follow:

C:\javafundamentals\ex03>javac ShoppingCart.java

Tip: Upon successful compilation of the "ShoppingCart.java", it created "ShoppingCart.class" which is the bytecode that will be used to execute the program.

4) I executed(test) the program as follow:

C:\javafundamentals\ex03>java ShoppingCart
Error: Could not find or load main class ShoppingCart

TIP: Trying to execute(test) the program resulted in the above error.

Please I need help in solving the problem, although I have set both "PATH & CLASSPATH" environmental variable as suggested by stackoverflow and oracle yet no avail.

Answer 1

Package name must be the same as the folder name. In your case "package ex03;" is the right name.

If you use package names, then you need to run javac and java commands from the root folder. In your case "C:\javafundamentals". For "java" command you also have to prepend package name to the class name, like this:

java ex03.ShoppingCart

Compilation will be like this:

javac ex03\ShoppingCart.java

Answer 2

Igor Makarsky I will test it and give you feedback

Answer 3

Igor Makarsky thanks very much it worked, you saved me a whole lot more than you think because I have been battling with it for two days.