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Could not find main class ? [message #658180]

Mon, 07 March 2011 10:14

Zhg Mising name

Messages: 81
Registered: March 2011

Member

this is program,
package org.firstpicture;

import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class FirstDisp1 {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub

Display display = new Display();
Shell shell = new Shell(display);
shell.setText("Hello world!");
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}

}
when run, I get prompt
could not find main class, program will exist,
and in console is
Exception in thread "main" java.lang.Error: Unresolved compilation problem:
at FirstDisp1.main(FirstDisp1.java:11)
how to find main class in properties?

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Re: Could not find main class ? [message #658479 is a reply to message #658180]

Tue, 08 March 2011 16:38

Chang

Messages: 5
Registered: September 2010

Junior Member

You have a compilation error, which must be corrected before running the program.

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Re: Could not find main class ? [message #658565 is a reply to message #658479]

Wed, 09 March 2011 01:21

Zhg Mising name

Messages: 81
Registered: March 2011

Member

yes, the red prompt.
how to solve the problem?

is it any wrong with config or anything else?

Thanks,

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Re: Could not find main class ? [message #658941 is a reply to message #658565]

Thu, 10 March 2011 14:11

Zhg Mising name

Messages: 81
Registered: March 2011

Member

I get it. it concerns with package set up and build path set.

Thanks,

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Re: Could not find main class ? [message #687670 is a reply to message #658941]

Thu, 23 June 2011 01:00

kitamoon

Messages: 6
Registered: June 2011

Junior Member

do I need to make another post? Sorry if I am breaking the rules but i am a newbie and Im having the same Exception within my main class yet I have no earthly idea what is not being imported or build within my project.

Exception in thread "main" java.lang.Error: Unresolved compilation problem:

at edu.cmu.sphinx.demo.robottest.RobotTest.main(RobotTest.java:19)

line 19: public static void main(String[] args) {

I apologize again if i cannot reply here, but can anyone help? Thank you in advance!

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Re: Could not find main class ? [message #687740 is a reply to message #687670]

Thu, 23 June 2011 05:57

Satyam Kandula

Messages: 444
Registered: July 2009

Senior Member

Look at the Problems view. It will show you why there is an error

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Re: Could not find main class ? [message #687910 is a reply to message #687740]

Thu, 23 June 2011 13:55

kitamoon

Messages: 6
Registered: June 2011

Junior Member

i have looked at several times but i am totattly l-o-s-t that is why i am asking for help. I seriously looked it over for hours! Please help.

package edu.cmu.sphinx.demo.robottest;

import edu.cmu.sphinx.frontend.util.Microphone;
import edu.cmu.sphinx.recognizer.Recognizer;
import edu.cmu.sphinx.result.Result;
import edu.cmu.sphinx.util.props.ConfigurationManager;

public class RobotTest {

/**
* @param args
*/
public static void main(String[] args)
{
// TODO Auto-generated method stub
ConfigurationManager cm;

if (args.length > 0) {
cm = new ConfigurationManager(args[0]);
} else {
cm = new ConfigurationManager(RobotTest.class.getResource("robottest.config.xml")); <--------lINE 19
}

Recognizer recognizer = (Recognizer) cm.lookup("recognizer");
recognizer.allocate();

// start the microphone or exit if the programm if this is not possible
Microphone microphone = (Microphone) cm.lookup("microphone");
if (!microphone.startRecording()) {
System.out.println("Cannot start microphone.");
recognizer.deallocate();
System.exit(1);
}

System.out.println("Say: anything from the RobotTest.gram");

// loop the recognition until the programm exits.
while (true) {
System.out.println("Start speaking. Press Ctrl-C to quit.\n");

Result result = recognizer.recognize();

if (result != null) {
String resultText = result.getBestFinalResultNoFiller();
System.out.println("You said: " + resultText + '\n');
} else {
System.out.println("I can't hear what you said.\n");
}
}

}

}

Exception in thread "main" java.lang.Error: Unresolved compilation problem:

at edu.cmu.sphinx.demo.robottest.RobotTest.main(RobotTest.java:19)

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Re: Could not find main class ? [message #687933 is a reply to message #687910]

Thu, 23 June 2011 14:46

Satyam Kandula

Messages: 444
Registered: July 2009

Senior Member

Do you mean you don't get any error reported in the problems view?

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Re: Could not find main class ? [message #687940 is a reply to message #687910]

Thu, 23 June 2011 14:53

kitamoon

Messages: 6
Registered: June 2011

Junior Member

Ha i didn't know there was a problems view. ok, It is saying that

Description Resource Path Location Type
Project 'thisone' is missing required source folder: 'edu/cmu/sphinx/demo/robottest' thisone Build path Build Path Problem

but this is where the RobotTest.java is!

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Re: Could not find main class ? [message #687944 is a reply to message #687933]

Thu, 23 June 2011 14:54

kitamoon

Messages: 6
Registered: June 2011

Junior Member

I really thank you for taking the time to help! I really got to figure this eclipse out soon.

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(no subject) [message #687984 is a reply to message #687670]

Thu, 23 June 2011 15:16

David Kerber

Messages: 100
Registered: July 2009

Senior Member

[This followup was posted to eclipse.newcomer and a copy was sent to the
cited author.]

In article <itu2m9$muv$1@news.eclipse.org>, forums-noreply@eclipse.org
says...
>
> do I need to make another post? Sorry if I am breaking the rules but i am a newbie and Im having the same Exception within my main class yet I have no earthly idea what is not being imported or build within my project.
>
> Exception in thread "main" java.lang.Error: Unresolved compilation problem:
>
> at edu.cmu.sphinx.demo.robottest.RobotTest.main(RobotTest.java:19)
>
> line 19: public static void main(String[] args) {
>
> I apologize again if i cannot reply here, but can anyone help? Thank you in advance!

You have a problem with your code in RobotTest.java, line 19. Fix that
and it will at least get further along.

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(no subject) [message #687985 is a reply to message #687940]

Thu, 23 June 2011 15:19

Nitin Dahyabhai

Messages: 4435
Registered: July 2009

Senior Member

On 6/23/2011 10:53 AM, kitamoon wrote:
> Ha i didn't know there was a problems view. ok, It is saying that
> Description Resource Path Location Type
> Project 'thisone' is missing required source folder:
> 'edu/cmu/sphinx/demo/robottest' thisone Build path Build Path Problem
>
> but this is where the RobotTest.java is!

You have Build Automatically enabled on the Project menu, right?

--
Nitin Dahyabhai
Eclipse WTP Source Editing and JSDT
IBM Rational

_
Nitin Dahyabhai
Eclipse Web Tools Platform

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