Java Error: Could not find or load main class

Question

package src.sheet1.question1;

class OneFourTwoOne {

    public static void main(String[] args) {

        assert args.length == 1;

        int x = Integer.parseInt(args[0]);

        System.out.print(x);

        while(x != 1) {
            x = next(x);
            System.out.print(" " + x);
        };

    }

    static int next(int x) {

        return ((x % 2) == 0) ? (x / 2) : (3*x + 1);

    }

}

when I input :java OneFourTwoOne in the terminal, here occurs an error: Error: Could not find or load main class OneFourTwoOne How can I run it?

Sergey Kalinichenko · Accepted Answer · 2015-03-21 01:25:38Z

3

Java cannot run your class because it is in a package. Java expects the package name to be matched by the path to your file.

Create a directory structure that looks like this:

src
  +-sheet1
     +-question1
        +-OneFourTwoOne.java

and compile your class into OneFourTwoOne.class. Now switch the parent directory of src, and execute the command

java src.sheet1.question1.OneFourTwoOne

answered Mar 21, 2015 at 1:25

Sergey Kalinichenko

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Comments

Master Test Account · Accepted Answer · 2020-11-25 11:37:00Z

0

Java cannot run your class because it is in a package. Java expects the package name to be matched by the path to your file.

answered Nov 25, 2020 at 11:37

Master Test Account

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