It's from the old c convention. argv is short for argument vector where a vector is a one-dimension array.

-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx [mailto:java400-l-bounces@xxxxxxxxxxxx] On Behalf Of Gary L Peskin
Sent: Monday, July 18, 2011 5:33 PM
To: 'Java Programming on and around the IBM i'
Subject: RE: NoSuchMethodError because of signature?

The main method has to accept an array of Strings, even if you're not actually passing anything in. You need to have:

public static void main(String[] argv)

You don't need to name the variable argv -- you can name it whatever you want.


-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx [mailto:java400-l-
bounces@xxxxxxxxxxxx] On Behalf Of Peter Dow
Sent: Monday, July 18, 2011 3:19 PM
To: Java Programming on and around the iSeries / AS400
Subject: NoSuchMethodError because of signature?

Moving right along with my program, I got it compiled,
and when I attempt to run it with

qsh cmd('java /home/pdow/testjava.class')

I get the following error:

Exception in thread "main" java.lang.NoSuchMethodError:

qsh cmd('javap -s -public -classpath $CLASSPATH


Compiled from ""
public class testjava extends java.lang.Object{ public testjava();
Signature: ()V
public static void main();
Signature: ()V

What's going on? Why does the error seem to indicate I should be
passing it a string?

Peter Dow*/
Dow Software Services, Inc.
909 793-9050
pdow@xxxxxxxxxxxxxxx <mailto:pdow@xxxxxxxxxxxxxxx> /

This is the Java Programming on and around the IBM i (JAVA400-L) mailing list To post a message email: JAVA400-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options,
or email: JAVA400-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at

As an Amazon Associate we earn from qualifying purchases.

This thread ...


Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2022 by and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.