   [java] probs w/ my first java app
  hi there!today i converted my c++ game ai main routines to java. i installed the latest j2se sdk from sun and could compile it w/ javac. when i started java  i got the following error:Exception in thread "main" java.lang.NoClassDefFoundError: myAppi''ve win2000 and the latest sun sdkwhere''s the problem? i experimented w/ the classpath but nothing worked.can anybody help me please...here''s a part of my code:/************************************************************************************ lettermix class - implements all game functionality************************************************************************************/package LetterMix;import  LetterMix.Dict;import  LetterMix.Cubes;import  LetterMix.Board;import  LetterMix.Word;import  java.io.*;public final class LetterMix{private static final int COUNT_OF_CUBES = 13;private static final int BOARD_WIDTH = 13;private static final int BOARD_HEIGHT = 13;private static final int NOT_USED = 0;private static final int LEFT_TO_RIGHT = 1;private static final int UP_TO_DOWN = 2;private static final int EASY = 0;private static final int NORMAL = 1;private static final int HARD = 2;private static final int AI_MODE_ONE = 0;private static final int AI_MODE_TWO = 1;private static final int AI_MODE_THREE = 2;private static final int COUNT_OF_AI_MODES = 3;private static Dict  dict;private static Cubes cubes;private static Board board;private static Word  words[];private static int   difficulty,   wordCount;privatestatic StringbestWord;public static void main(String argv[]){if(init(argv)){startThinking();showResults();}else{System.out.println("init failed...");}}public static boolean init(String argv[]){dict = new Dict(); cubes = new Cubes();board = new Board();words = new Word[COUNT_OF_CUBES];//no parameters...if(argv.length==0){System.out.println("LETTERMIX ai_mode [cubes_init_string]");return false;}//select difficultyif(argv.length>0){switch(argv[0].charAt(0)){case ''E'':difficulty=EASY;break;case ''N'':difficulty=NORMAL;break;case ''H'':difficulty=HARD;break; default :   System.out.println("unsupported difficulty...");return false;}}//have we a second parameter?if(argv.length>1){//this cube init string sux...if(argv[1].length()!=COUNT_OF_CUBES){System.out.println("cube init string wrong...");return false;}//initialize cubes w/ init stringcubes.init(argv[1]);}//ok, then we...else{//...let the random playcubes.init("");while(!cubes.roll());}//initialize dictionarytry{dict.init();}catch(IOException e){System.out.println("dictionary init failed...");return false;}board.init();wordCount=0;return true;} 
  Maybe its because you''re using a package...What is myApp? The class must be declared in a .java file of the same name, and compiled to a class file of the same name. ;  HiIf you say something like: public class yourName   the java file has to be the same as that name.  Example:public class Test  is in the file Test.java and when compiled it's called Test.class. So you use java test   to start it Hope this can help you Wesley   [edited by - wicked_wesley on February 7, 2004 5:17:47 PM];quote:Original post by Anonymous Poster  Maybe its because you''re using a package...What is myApp? The class must be declared in a .java file of the same name, and compiled to a class file of the same name.   yeah you need to do java LetterMix.LetterMix to run the program i think ;  thanx 4 all!i''ve found the problem. it was not the classpath but the wrong import path - i dropped the package statement and put the main class to the parent folder and the rest in the actual. sometimes it''s so easy...i thought that there must be something wrong with win2000 and the new j2se sdk. i tried everything with the classpath but nothing happened. damn. it costed me 3 hours to run it.but now it''s fine :-) 