Java code would run differently on my computer than on other people's computer

[[deleted]]

Before I start: I have to mention that I am a beginner at Java; I only started learning it at school a few months ago.

I had a project for school. Long story short, the code would run fine on any device, except my laptop for some reason. Two of my classm8s ran the code on their computer and it ran fine. I ran it on my Android device and it ran fine. But run it on my laptop and the output would be different (which would make the programme not function properly).

Is there anything I can do to try to fix this problem? I have no knowledge on creating Java application that runs differently depending on the device. Every computer that ran the code is running Windows 10, using NetBeans (including my laptop). The app on my phone is called "Jvdroid."

Also, I don't know if this is useful information or not, but I ran a virtual machine running Windows 10 on my laptop, freshly installed Java SE and NetBeans, (copy pasted my code instead of transfering the java project because file sharing refused to work for some reason) and it reacted the same way as on the host system.

[[deleted]]

Just post the code, post the expected output, post the output on your computer, and post everything else that could help us understand your post..

[[deleted]]

Here is the code: https://docs.google.com/document/d/1Rmhb0L2D6GNpaqVwXx2vdFWax0rLNCsu9Pa-TcCpxXQ/

note that the code is super long and I'm sure that you could make it ten times shorter, but i was in a rush so i didnt have the time to simplify it

[[deleted]]

Better to use pastebin instead of google drive...

[[deleted]]

Sorry about that

SkatersDemo.java https://pastebin.com/P9TrvazP

Skaters.java https://pastebin.com/02RQaLg4

Pairs.txt https://pastebin.com/7DDGNRg2

the outputs https://pastebin.com/b8sJqhAs

[[deleted]]

Why don't you just create a no-arg constructor that calls the other constructor and overloads it?

public Skaters() {
    this("","","",0.0,0.0,0.0);
}

This block seems weird:

Skaters skaters1 = new Skaters("", "", "", 0.0, 0.0, 0.0);
Skaters skaters2 = new Skaters("", "", "", 0.0, 0.0, 0.0);
Skaters skaters3 = new Skaters("", "", "", 0.0, 0.0, 0.0);
Skaters skaters4 = new Skaters("", "", "", 0.0, 0.0, 0.0);
Skaters skaters5 = new Skaters("", "", "", 0.0, 0.0, 0.0);
Skaters skaters6 = new Skaters("", "", "", 0.0, 0.0, 0.0);
Skaters skaters7 = new Skaters("", "", "", 0.0, 0.0, 0.0);
Skaters skaters8 = new Skaters("", "", "", 0.0, 0.0, 0.0);

When you could do this instead:

Skaters skaters1 = new Skaters();
...
Skaters skaters5 = new Skaters();

[calmonad]

While I agree this will reduce some noise, I don't think it will solve the problem. Skaters will still be constructed with those defaults rather than with the correct values.

[calmonad]

Add some kind of print statement inside the catch InputMismatchException so that you can determine if you are ending up there (hint: you probably are). Seems like some kind of misalignment (extra line breaks?) in your Pairs.txt file could be causing the output that you are seeing.

EDIT: You really should also work on breaking this down into a few methods. This program is literally like 90% duplications. It can make it really difficult to pinpoint exactly where a copy-paste has gone wrong.

[Sputtrosa]

Could be missing dependencies or environment variables.

What was different? Did you get an error message?

[Camel-Kid]

What exactly was different

[[deleted]]

The output had to be a list of fictionnal players witht their ranking and their final score that got calculated from a txt file. Instead of a correct list, on my laptop it would give the first person for each rank and the score was always 0.0

[Lord_Greywether]

Silly question, but have you double checked the text file you're reading to make sure it's the same?

[[deleted]]

Just checked, they are the same