Main class can not be found or loaded when running using command prompt

Question

I would like to run my Java program using command prompt but I got an error Main class can not be found or loaded. Here is my Java Class:

package date_time;

import java.util.Date;

public class Demo {

    public static void main(String[] args) {
        Date date = new Date();
        System.out.println("Date Time: " + date.toString());

    }

}

I put the Java file in folder: C:\Users\sduong\workspace\DateTimeDemo\src\date_time. And then I used javac to compile, then inside my folder there are two files: Demo.class and Demo.java. Then I use command: java Demo to run but it not work, I also tried java date_time.Demo, java -cp Demo, java -cp date_time.Demo but none of them worked. I set also my Path Variable already to: C:\Program Files\Java\jdk1.8.0_131\bin. Can anyone have an idea how to fix it?

You have to create the package structure as folders in your working directory. — Reporter, Jul 20 '17 at 11:04
https://stackoverflow.com/questions/18093928/what-does-could-not-find-or-load-main-class-mean this is the question you've made, basically — Shinra tensei, Jul 20 '17 at 11:05

score 1 · Accepted Answer · answered Jul 20 '17 at 11:04

1

you have to Change to Directory C:\Users\sduong\workspace\DateTimeDemo\src\

and run the command:

 java -cp .\ date_time.Demo

answered Jul 20 '17 at 11:04

Jens

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Main class can not be found or loaded when running using command prompt

1 Answers1