Results 1 to 9 of 9
  1. #1
    java_aim is offline Member
    Join Date
    Oct 2011
    Posts
    15
    Rep Power
    0

    Default What's wrong with this program?

    First_Cup.java
    ----------------------------------------------------------------------------

    import java.awt.Rectangle;

    public class First_Cup {

    public static void main(String[] args){
    Rectangle cerealBox = new Rectangle(5,10,20,30);
    cerealBox.translate(15,25);
    System.out.println(cerealBox);
    System.out.println("First Cup!");
    }
    }

    I could compile this program successfully; but the byte code could not possibly run.
    I have no idea why it could not run. Could somebody tell me why?

    Runtime Error Message:

    Exception in thread "main" java.lang.NoClassDefFoundError: First_Cup/class

    Could not find the main class: First_Cup.class. Program will exit.

  2. #2
    JosAH's Avatar
    JosAH is online now Moderator
    Join Date
    Sep 2008
    Location
    Voorschoten, the Netherlands
    Posts
    14,050
    Blog Entries
    7
    Rep Power
    23

    Default Re: What's wrong with this program?

    I bet you tried to run it as
    Java Code:
    java First_Cup.class
    Don't do that and read the tutorials how you are supposed to run your class.

    kind regards,

    Jos
    The only person who got everything done by Friday was Robinson Crusoe.

  3. #3
    java_aim is offline Member
    Join Date
    Oct 2011
    Posts
    15
    Rep Power
    0

    Default Re: What's wrong with this program?



    I have run the command already; yet it still does not work.

  4. #4
    JosAH's Avatar
    JosAH is online now Moderator
    Join Date
    Sep 2008
    Location
    Voorschoten, the Netherlands
    Posts
    14,050
    Blog Entries
    7
    Rep Power
    23

    Default Re: What's wrong with this program?

    Quote Originally Posted by java_aim View Post


    I have run the command already; yet it still does not work.
    "does not work" is not a very detailed problem description.

    Jos
    The only person who got everything done by Friday was Robinson Crusoe.

  5. #5
    java_aim is offline Member
    Join Date
    Oct 2011
    Posts
    15
    Rep Power
    0

    Default Re: What's wrong with this program?

    The newly received message:

    Exception in thread "main" java.lang.UnsupportedClassVersionError: First_Cup : Unsupported major.minor version 51.0

    ...

    Could not find the main class: First_Cup. Program will exit.

  6. #6
    JosAH's Avatar
    JosAH is online now Moderator
    Join Date
    Sep 2008
    Location
    Voorschoten, the Netherlands
    Posts
    14,050
    Blog Entries
    7
    Rep Power
    23

    Default Re: What's wrong with this program?

    Quote Originally Posted by java_aim View Post
    The newly received message:

    Exception in thread "main" java.lang.UnsupportedClassVersionError: First_Cup : Unsupported major.minor version 51.0

    ...

    Could not find the main class: First_Cup. Program will exit.
    Type this:

    Java Code:
    javac -version
    java -version
    and show us the results; I suspect that you're using different versions for compilation and running the stuff.

    kind regards,

    Jos
    The only person who got everything done by Friday was Robinson Crusoe.

  7. #7
    java_aim is offline Member
    Join Date
    Oct 2011
    Posts
    15
    Rep Power
    0

    Default Re: What's wrong with this program?

    Sorry. It's just worked.

  8. #8
    JosAH's Avatar
    JosAH is online now Moderator
    Join Date
    Sep 2008
    Location
    Voorschoten, the Netherlands
    Posts
    14,050
    Blog Entries
    7
    Rep Power
    23

    Default Re: What's wrong with this program?

    Quote Originally Posted by java_aim View Post
    Sorry. It's just worked.
    Care to explain what you did to fix it?

    kind regards,

    Jos
    The only person who got everything done by Friday was Robinson Crusoe.

  9. #9
    java_aim is offline Member
    Join Date
    Oct 2011
    Posts
    15
    Rep Power
    0

    Default Re: What's wrong with this program?

    I just reinstalled JDK. :D (1.7)

Similar Threads

  1. What is wrong with this program!?
    By flecdorbee in forum New To Java
    Replies: 5
    Last Post: 02-26-2011, 02:11 AM
  2. what the wrong in my program ><
    By MSs.Java in forum New To Java
    Replies: 4
    Last Post: 05-03-2010, 01:28 PM
  3. Wrong Order in Program Run
    By HeatR216 in forum New To Java
    Replies: 0
    Last Post: 03-25-2010, 09:41 PM
  4. What's wrong in my program...?
    By Annatar in forum Java Software
    Replies: 3
    Last Post: 10-31-2008, 07:03 AM
  5. what is wrong with this program ?
    By Poor Bee in forum New To Java
    Replies: 1
    Last Post: 05-07-2008, 07:23 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •