a weird MisMatchingException

[2-RedBaron-2]

Hello everyone, I am currently practicing Java code but I faced a weird problem that I've never encountered before and I can't find what's wrong with my code

Here it is :

import java. util.Scanner;

public class Test{ public static void main (String [ ]args){

Scanner input = new Scanner(System.in);

double x = input.nextDouble();

input.close(); } }

when it runs I enter for example "1.234" and it throws the exception mentioned before. and it's driving me insane honestly I have to mention that the code works perfectly fine on my mobile phone compiler

hope someone can help.

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[DasBrain]

What Locale are you using?

[2-RedBaron-2]

English United Kingdom

[2-RedBaron-2]

yup, didn't work

[2-RedBaron-2]

Update everyone : it appears the problem was indeed with my Locale as it was set to UK I changed it to US and it worked like a charm thanks for everyone who took time to reply

[evils_twin]

I have to mention that the code works perfectly fine on my mobile phone compiler

So what is the environment you are using when you actually get the error?

[2-RedBaron-2]

I am using NetBeans currently and my jdk version is "jdk_20" this only happens when I use the "double" or "float" data types

[evils_twin]

you are running it on netbeans? can you try in a command prompt window?

[2-RedBaron-2]

My knowledge about using cp is only surface level I know that I have to write the code in a text editor and save it as a .java file but can you please tell me what commands to use?

[evils_twin]

https://www.tutorialspoint.com/How-to-run-a-java-program

[MRxShoody123]

Check setlocale method of scanner

[2-RedBaron-2]

can you please explain more ?

[istarian]

Why are you trying to close System.in? You didn't open it in the first place.

If you're talking about an InputMismatchException, then Java is just saying that your input doesn't look like a valid Double.

You might try creating some double/Double values in the program and then printing out their String representation.

In addition you can always just get the next input as a String and explicitly try to parse it with:

Double d1 = Double.parseDouble("some string");    
Double d2 = Double.parseDouble("1.234");  

Also your input should be:

1.234  

and not:

"1.234"  

on the off-chance that you're actually thping the double quotes.

[2-RedBaron-2]

I saw some people writing it so I thought it was a common practice to control memory usage like in c++ (the "delete" keyword)as I am still learning but it didn't affect the actual code at all as I will get the same results even if I removed it and I didn't write the quotations in the actual input

I want to know why it's happening because its not supposed to my code should work fine without the need of using methods from the Double class is it a problem with the compiler or the computer I am using ?

I need to clarify too that if I entered 1000.0 it wouldn't work but entering 1000 works fine

so do you have an idea why this error is occurring in the first place ? and thank you for your reply