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Problems with "Hello World" example

Posted on 2004-10-04
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Last Modified: 2010-03-31
I have this program:
****************************
class hello
{
   public static void main(String args[])
   {
      System.out.println("Hello World!");
   }
}
****************************
I saved this program to my hard disk as "hello.java", then I run "javac hello.java". After this I use: "java hello"  and I get this message: Exception in thread "main" java.NoClassDefFoundError: hello"

What do I have to add to my program, how do I compile it ???


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Question by:probine
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7 Comments
 
LVL 35

Expert Comment

by:girionis
ID: 12215960
Try this:

java -classpath . hello
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 12215965
set classpath=%classpath%;.
0
 

Author Comment

by:probine
ID: 12216043
I am going from the beginning, because it did not work:

1. I have installed Java under my "d:". It looks like "d:\Java"
2. When I compile the "hello.java" I do this:

- I move to the d:\Java folder, so I get this path:

D:\Java\bin>javac d:\Java\programs\hello.java

D:\Java\bin>java -classpath . hello

It doesn't work.

How do I register the path to javac and hava, so I do not have to always type the full path and how do I run this program ???
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LVL 86

Accepted Solution

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CEHJ earned 50 total points
ID: 12216060
java -classpath d:\Java\programs hello
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LVL 86

Expert Comment

by:CEHJ
ID: 12216084
You need to put the java bin directory on your path. Look up 'Environment variable' in Windows help
0
 
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Expert Comment

by:zzynx
ID: 12216118
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 12216204
8-)
0

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