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How to pass arrays from a PERL code to a JAVA code

I call my java code from my perl code as seen below:

my @javaCmd = ('java', '-jar', "$mydir/myTool/Tool-1.0.jar", '$Login', '@Rec', '$ID', "$clstr', 
'$optionLog', '$optionSb', '$soapEndpointURL', '@Files', '@Com', '@CR', '$File');

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and this is the beginning of my java code:

public static void main(java.lang.String args[])
       {   
    	   if (args.length == 11) {
	    	   java.lang.String login = args[0];
	    	   java.lang.String rec = args[1];
	    	   java.lang.String id = args[2];
	    	   //java.lang.String pathToJobFile = args[3];
	    	   java.lang.String clstr= args[3];
	    	   java.lang.Boolean optionlog = args[4].equals("1");
	    	   java.lang.Boolean optionsb = args[5].equals("1");
	    	   java.lang.String soapEndpointURL = args[6];
                   java.lang.String Files = args[7];
                   java.lang.String Com = args[8];
                   java.lang.String CR = args[9];
                   java.lang.String File = args[10];

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Can I do it this way?

I think something is wrong in here with the arrays that I pass.

How can I do it the right way?

Note: @Rec in the function call has numbers in it.

Thanks,

Nem Schlecht

Hmm... You've got literal quotes when you're building the command in perl.

Change your single quotes to double-quotes - otherwise @Rec is getting passed as the literal string '@Rec' instead of the values stored in that array.

Nem Schlecht

Also, you have one variable with mixed quotes: "$clstr',

Also, once you start passing actual values, your Java code will break if @Rec has more than value, since in Java you're only looking for one value.

In the past where I've had to do something similar, I've build a much more complex argument parser, something along the lines of calling Java with arguments like:

java -jar $mydir/myTool/Tool-1.0.jar login:my_name rec:1 rec:4 rec:5 id:id_info .... (etc.)

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And then using a loop on args in Java to figure out what each argument is and then assign it to the proper variable(s) in Java.

Tolgar

ASKER

Ok I changed the single quotes to double quotes.

But for your other command, I didn't really understand what you mean.

So, my question was how to pass an array in Perl to another array in Java.

And the length of the array can change. So I cannot hard-code it. The way I do it in Java can be changed. So I don't enforce anything there. But I just want to pass the entire array to Java at once.

Isn't it possible? If it is, how can I do it?

Thanks,

ASKER CERTIFIED SOLUTION

Nem Schlecht

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Tolgar

ASKER

Can you please send me a sample code in Java with this example (for Rec) on how to loop through the arguments?

I am kind of new to Java. So that would really help me to accelerate.

Thanks,

for_yan

If your array is strings it will be something like that:

public ststic void main(String [] args){
String login = args[0];
String numRec = args[1];

int i = -1;

try{
i = Integer.parseInt(numRec);

}catch(Exception ex){
System.out.println("second argument should be int");
System.exit(0);
}

String [] recs = new String[i];

for(int j=0; j<recs.length; j++){

recs[j] = args[2+j];
}


}

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parparov

I think you'll have to use Inline::Java in your perl when things get that complicated:

http://search.cpan.org/dist/Inline-Java/Java.pod

Tolgar

ASKER

nemws1: I have a follow-up question

ID: 27380245

Thanks,