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Re: Self-executing JAR

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Tim Slattery wrote:
>> I have a very simple command-line program in Eclipse, just a
>> System.out.println("Hello World"). It runs just fine in the IDE. So I
>> use File|Export|Export, and select "Runnable JAR file". A JAR is
>> created. 
>>
>> And it doesn't work. I can double-click on it, or I can call it from a
>> command line. I get nothing. No "Hello world", no error message, no
>> nothing. What have I missed?
> 
> More info:
> Here's the class:
> 
> 
> public class Main {
> 	public static void main(String[] args) 
> 	{
> 	    System.out.println("Here I am!");
> 	    try
> 	    {
> 	        SimpleDateFormat sdf = new
> SimpleDateFormat("MM/dd/yyyy");
> 	        sdf.setLenient(false);
> 	        Date mydate = sdf.parse("2/29/1900");
> 	        System.out.println("Good date: " + mydate.toString());
> 	    }
> 	    catch (ParseException ex)
> 	    {
> 	        System.out.println("ParseException: " +
> ex.getMessage());
> 	    }
> 
> 	}
> 
> 	/* (non-Java-doc)
> 	 * @see java.lang.Object#Object()
> 	 */
> 	public Main() {
> 		super();
> 	}
> 
> I export "Main.jar". To invoke from the command line, I type
> "Main.jar". Nothing but a command prompt. I have jedit installed. If I
> go to its directory and type "jedit.jar", it jumps right up. Therefore
> I assume that the JRE can be found. 

"Main.jar" is not an executable, so it won't execute unless you give it one:

  java -jar Main.jar

Show us the manifest, please?

Did you tell Windows to associate JAR files with the "java -jar" command, as "markspace" suggested?

What happens if you have a Word doc, say "foo.doc", and you type "foo.doc" at the command line?

-- 
Lew

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Thread

Self-executing JAR Tim Slattery <Slattery_T@bls.gov> - 2012-04-16 14:46 -0400
  Re: Self-executing JAR Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2012-04-16 12:21 -0700
  Re: Self-executing JAR markspace <-@.> - 2012-04-16 12:22 -0700
  Re: Self-executing JAR Tim Slattery <Slattery_T@bls.gov> - 2012-04-16 16:34 -0400
    Re: Self-executing JAR Lew <lewbloch@gmail.com> - 2012-04-16 14:26 -0700
      Re: Self-executing JAR "John B. Matthews" <nospam@nospam.invalid> - 2012-04-16 21:06 -0400
    Re: Self-executing JAR Knute Johnson <nospam@knutejohnson.com> - 2012-04-16 14:35 -0700
    Re: Self-executing JAR markspace <-@.> - 2012-04-16 14:51 -0700
      Re: Self-executing JAR markspace <-@.> - 2012-04-16 15:00 -0700
      Re: Self-executing JAR Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2012-04-17 08:31 +0000
        Re: Self-executing JAR markspace <-@.> - 2012-04-17 07:35 -0700
    Re: Self-executing JAR Lew <lewbloch@gmail.com> - 2012-04-16 15:51 -0700
      Re: Self-executing JAR Tim Slattery <Slattery_T@bls.gov> - 2012-04-17 08:56 -0400
    Re: Self-executing JAR Tim Slattery <Slattery_T@bls.gov> - 2012-04-17 10:49 -0400
      Re: Self-executing JAR markspace <-@.> - 2012-04-17 07:57 -0700
        Re: Self-executing JAR Tim Slattery <Slattery_T@bls.gov> - 2012-04-18 09:06 -0400
  Re: Self-executing JAR Roedy Green <see_website@mindprod.com.invalid> - 2012-04-17 04:24 -0700

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