[2 days left] What’s wrong with your cloud strategy? Learn why multicloud solutions matter with Nimble Storage.Register Now

x
?
Solved

java's problems

Posted on 2002-04-16
9
Medium Priority
?
279 Views
Last Modified: 2013-11-23
i am now using the SAMS-Teach yourself Java2 in 21 days,but
faced some problems and needed for your help!

firstly,i used jdk1.2.2 version.According to the book,after installing
we might notice that one files installed in the JDK\lib subfolder
called classes.zip,but i cant find it.I used (Statr|Find|Files and folder)
to search the whole directory C: which i installed but the result was same.

second,i followed the book to set the path and type java -version and the
following displayed :"
java version 1.2.2
Classic VM (build JDK-1.2.2-W,native threads,symcjit)"

After that, i compiled the source files  in the book--HelloDan.java
successfully!A files called HelloDan.class is found in the same folder that
contains HelloDan.java. But,when i run it,the following error displayed:
'Exception in thread "main"java.lang.NoClassDefFoundError:HelloDan'
and i even followed the book to set the classpath,the same thing happenned.
so ,what should i do?Is there anyway to rectify this problems?

**I am using Windows98,Pentium MMX 200 **
0
Comment
Question by:tmchuan
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
9 Comments
 
LVL 19

Accepted Solution

by:
cheekycj earned 200 total points
ID: 6945471
are you running the file using:
java HelloDan

not java HelloDan.class

about the classes.zip:
"With the Java 2 platform, the system classes no longer reside in a zip file (a good idea, considering occasional misguided attempts at unzipping the file). They're now stored in a Java Archive (jar) file. The runtime classes are found in the file rt.jar (located in the jre/lib directory), while the JDK-supported tool classes are found in the tools.jar file (located in the lib directory)." from javasoft.com

CJ
0
 

Expert Comment

by:mrowka
ID: 6945481
try running the java interpreter with the -cp option
including the current directory (assuming you just
compiled it there)
such as:

java -cp . HelloDan

this should pick up the class files from the current directory
0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 
LVL 3

Expert Comment

by:rjackman
ID: 6946937
check ur CLASSPATH
place . in it
ie
CLASSPATH = .;
cheers
RJ
0
 

Author Comment

by:tmchuan
ID: 6954435
Thanks a lots...good luck
0
 

Author Comment

by:tmchuan
ID: 6954442
Thanks a lots...good luck
0
 

Author Comment

by:tmchuan
ID: 6954448
Thanks to mrowka and rjackman ....
0
 

Author Comment

by:tmchuan
ID: 6954453
Thanks to mrowka and rjackman ....
0
 
LVL 19

Expert Comment

by:cheekycj
ID: 6954459
Thanx for the "A"
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Are you developing a Java application and want to create Excel Spreadsheets? You have come to the right place, this article will describe how you can create Excel Spreadsheets from a Java Application. For the purposes of this article, I will be u…
In this post we will learn different types of Android Layout and some basics of an Android App.
Viewers will learn about the regular for loop in Java and how to use it. Definition: Break the for loop down into 3 parts: Syntax when using for loops: Example using a for loop:
This tutorial explains how to use the VisualVM tool for the Java platform application. This video goes into detail on the Threads, Sampler, and Profiler tabs.
Suggested Courses

649 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question