java compiling error in command prompt

Question

Error: Main method not found in class volume, please define the main method as: public static void main(String[] args) or a JavaFX application class must extend javafx.application.Application

import java.util.*;
class volume {

    private int x;

    public float volume(float l) {
    return (l * l * l);
    }

    public float volume(float r, float h) {
    return (3.14f * r * r * h);
    }

    public float volume(float l, float b, float h) {
    return (l * b * h);
    }
}

class main {

    public static void main(String[] args) {
    volume a = new volume();
    System.out.println("volume of cube=" + a.volume(10));
    System.out.println("volume of cylinder=" + a.volume(10, 10));
    System.out.println("volume of cuboid=" + a.volume(10, 10, 10));
    }
}

Side note: By convention, Java class names should start with a capital letter. You should rename class volume to Volume and class main to Main. — user1438038
– user1438038, Commented Dec 17, 2014 at 9:57

Eran · Accepted Answer · 2014-12-17 09:52:55Z

1

Move your main method to volume class and make volume class public. You don't need class main.

answered Dec 17, 2014 at 9:52

Eran

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Comments

Sebri Zouhaier · Accepted Answer · 2014-12-17 09:54:26Z

0

remove class main { and } then you will have a main method in Volume class

answered Dec 17, 2014 at 9:54

Sebri Zouhaier

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newuser · Accepted Answer · 2014-12-17 09:54:41Z

0

Your program works fine. you just compile the main class and execute the main class.

answered Dec 17, 2014 at 9:54

newuser

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Comments

Sameer Khanal · Accepted Answer · 2016-05-23 12:43:10Z

0

Logically, the main method should be inside the class Volume. In spite of that, your code should have worked. But the real reason you are getting the error is because remember: in Java, the class names have to start with an uppercase.

Simply rename the class volume as Volume, and main as Main and it should work.

answered May 23, 2016 at 12:43

Sameer Khanal

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Comments

NSC · Accepted Answer · 2017-07-18 04:47:21Z

0

Please change your public class in your program. Then everything works fine.

answered Jul 18, 2017 at 4:47

NSC

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