Computer Science Canada

Code working in Eclipse but not in Sublime Text
Author:  chromium [ Thu Mar 13, 2014 1:07 pm ]
Post subject:  Code working in Eclipse but not in Sublime Text
Hi Im trying to get java to run properly in Sublime Text. I have the following code, which seems valid to me:

code:
import java.util.Scanner;

public class Thing {

        public static void main(String args[])
        {
            Scanner input = new Scanner( System.in );

            System.out.println ( "Please enter the numerator: " );
            int num = input.nextInt();

            System.out.println ( "Please enter the denominator: " );
            int den = input.nextInt();

            if (den != 0 ){
              System.out.println ("Decimal is " + convert (num, den));
            }
            else
              System.out.println ("Cant divide by zero");       

        }

        public static double convert(int x, int y)
        {       
                return ((double)x/y);       
        }

}


It runs fine in Eclipse but when I try to run in Sublime Text I get this error:
code:
Exception in thread "main" java.util.NoSuchElementException
        at java.util.Scanner.throwFor(Scanner.java:907)
        at java.util.Scanner.next(Scanner.java:1530)
        at java.util.Scanner.nextInt(Scanner.java:2160)
        at java.util.Scanner.nextInt(Scanner.java:2119)
        at Thing.main(Thing.java:11)


Anyone know why?
Author:  Raknarg [ Thu Mar 13, 2014 1:14 pm ]
Post subject:  RE:Code working in Eclipse but not in Sublime Text
String[] args not String args[] I believe
Author:  chromium [ Thu Mar 13, 2014 3:03 pm ]
Post subject:  Re: RE:Code working in Eclipse but not in Sublime Text
Raknarg @ Thu Mar 13, 2014 1:14 pm wrote:
String[] args not String args[] I believe


Made no difference. Same error.
Author:  Zren [ Thu Mar 13, 2014 4:02 pm ]
Post subject:  Re: Code working in Eclipse but not in Sublime Text
Sublime Text doesn't have a full fledged console inside it. So you can't really use System.in to enter input.

As a fix, you can change your build file to this:

Javascript:

{
    "cmd": ["javac", "$file"],
    "file_regex": "^(...*?):([0-9]*):?([0-9]*)",
    "selector": "source.java",
   
    "variants": [
        {
            "name": "Run",
            "cmd": ["start", "java", "$file_base_name"],
            "shell": true
        }
    ]   
}


The start command will open a new console window (Command Prompt), rather than tunneling the streams through Sublime.

Ctrl+B = Build
Ctrl+Shift+B = Run
Author:  Raknarg [ Thu Mar 13, 2014 9:58 pm ]
Post subject:  RE:Code working in Eclipse but not in Sublime Text
Oh I didn't realize Sublime Text could compile code at all.
Author:  chromium [ Thu Mar 13, 2014 11:21 pm ]
Post subject:  Re: Code working in Eclipse but not in Sublime Text
Zren @ Thu Mar 13, 2014 4:02 pm wrote:
Sublime Text doesn't have a full fledged console inside it. So you can't really use System.in to enter input.

As a fix, you can change your build file to this:

Javascript:

{
    "cmd": ["javac", "$file"],
    "file_regex": "^(...*?):([0-9]*):?([0-9]*)",
    "selector": "source.java",
   
    "variants": [
        {
            "name": "Run",
            "cmd": ["start", "java", "$file_base_name"],
            "shell": true
        }
    ]   
}


The start command will open a new console window (Command Prompt), rather than tunneling the streams through Sublime.

Ctrl+B = Build
Ctrl+Shift+B = Run


Great, that works almost perfectly. Command prompt opens and runs the program, however after everything has completed (get num, get den, return quotient as double), the console just closes. Is there a way to stop this from happening? So that the console stays open after all the code has executed?

Edit: Nevermind, I figured it out. I needed to add a command to pause the console after completing:
code:
{
    "cmd": ["javac", "$file"],
    "file_regex": "^(...*?):([0-9]*):?([0-9]*)",
    "selector": "source.java",
   
    "variants": [
        {
            "name": "Run",
            "cmd": ["start", "cmd", "/c", "java $file_base_name & pause"],
            "shell": true
        }
    ]   
}

:


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