Re: "Exception in thread "main" java.lang.nosuchmethodError: main"

keith vescovo via JavaKB.com wrote: 
I keep getting this message when trying to run a java program that
calculates the hypotenuse of a right triangle.  The program will compile,
but it won't run.  Could someone please help me with this?  Any help will
be greatly appreciated.  Here is the code for my program:


[subject="Exception in thread "main" java.lang.nosuchmethodError: main"]

That error means that the class doesn't have a static method with the signature "void main(String[])".

But I notice that your class is an Applet. Ah! Create the following html file and save it in the same directory as your class:

//--- Triangle.html (do not include this line)
<html>
	<head></head>
	<body>
	<applet code="Triangle.class" width="300" height="100"></applet>
	</body>
</html>
//--- (do not include this line)

And then, from the console, run: appletviewer Triangle.html
or load the html file in your web browser (make sure the .class file is in the same directory).


If you want to run the class with the java command, you must create a public static method called main:

//---
public static void main(String[] args) { ... }
//---


--
Peter MacMillan
e-mail/msn: peter@xxxxxxxxxxxxx
.

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