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Old 03-23-2008, 02:40 AM   #1
LinuxNewbie999
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Registered: Oct 2006
Distribution: FreeBSD
Posts: 162

Rep: Reputation: 30
Exception in thread "main" java.lang.NoClassDefFoundError:


Here is my code.
Code:
import java.io.*;
class Ex13{
    public static void main(String args[]) throws IOException{
        BufferedReader keyboard = new BufferedReader (new InputStreamReader(System.in));
       
        String input;
        int num = 0;
        int sum = 0;
       
        do {
        System.out.print("Enter a positive number: ");
        input = keyboard.readLine();
        num = Integer.parseInt(input);
       
        if ( num > 0)
            sum += num;
           
        }while (num > 0);
    System.out.println(sum);
    }
}
Compiling with javac hh.java was fine but somehow i got this error while run as java hh
Code:
Exception in thread "main" java.lang.NoClassDefFoundError: hh
   at gnu.j
ava.lang.MainThread.run(MainThread.java:102)
Caused by: java.lang.ClassNotFoundException: hh not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:./], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
   at java.net.URLClassLoader.findClass(URLClassLoader.java:529)
   at gnu.gcj.runtime.SystemClassLoader.findClass(natSystemClassLoader.cc:27)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:442)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:377)
   at gnu.java.lang.MainThread.run(MainThread.java:98)
Hmmmm.. what went wrong? How do i fix it??

Last edited by LinuxNewbie999; 03-23-2008 at 02:41 AM.
 
Old 03-23-2008, 05:42 AM   #2
duryodhan
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Registered: Oct 2006
Distribution: Slackware 12 Kernel 2.6.24 - probably upgraded by now
Posts: 1,054

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The class containing main function needs to be public
 
Old 03-24-2008, 01:12 AM   #3
LinuxNewbie999
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Registered: Oct 2006
Distribution: FreeBSD
Posts: 162

Original Poster
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hmmm, thank you. After i change the java file name same as the public class, it works.
 
  


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