Re: read file in my own .jar

phlinux wrote:
> Hello,
> 
> java -jar myapplication.jar
> 
> will launch my java application. I want that this application reads some 
> file from a .jar file.
> 
> On the internet I found a lot of samples for this job, but of course I 
> need the name of the .jar file.
> 
> The name of .jar file is myapplication.jar. But how to get it ?
> 
> In Linux, with C program argv[0] is name of the program.
> 
> My question is : How can I find that the running program is 
> myapplication.jar ? Is there a portable mechanism
> in java taht is linke the argv[0] in C context ?

Look closely at the declaration of your main method. There should be 
parameters there. If not, it can be re-written. Here is an example which 
you can see the parameters but they are not used.  The idea behind this 
was to double check and see if 25gigabytes would fit in a Long value:


public class LongValueChecker
{

	Long _longValue;
	
	public static void main ( String[] args )
	{
		LongValueChecker app = new LongValueChecker();
		
		app._longValue = new Long(( new Long(27) * new Long(1073741824) ));
		
		System.out.println ( app._longValue );
		System.out.println ( Long.MAX_VALUE );
		
		

	}

}

The output is:
28991029248
9223372036854775807

So in other words a Long value can hold 25 Gigabytes on the order of 
tens of millions of times over.

String[] args at the main declaration is where you get arguments from.

Wirte your self an experimental program that accepts a parameter and 
then prints it using System.out.println().


Jim C.


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