Re: Unable to use package...why ???

From:
Nigel Wade <nmw-news@ion.le.ac.uk>
Newsgroups:
comp.lang.java.programmer
Date:
Tue, 25 Oct 2011 10:32:45 +0100
Message-ID:
<9gne1vFvskU1@mid.individual.net>
On 25/10/11 08:06, PortisHead wrote:

Hello , I'm new to Java and tried the following.

First I created the file : Getbcard.java
inside the directory : C:\myclasses\exam\test\dok
below is the script :
package exam.test.dok;
public class Getbcard
{
public void setname()
{
System.out.println("Hello");
}
}

then , I compiled it using this command line:
javac Getbcard.java
and got the appropriated .class file:
Getbcard.class

Next , I created a new file , named : Showbcard.java in folder : C:
\examples
below is the script :
import exam.test.dok.*;
public class Showbcard
{
public static void main(String[] args)
{
System.out.println("Showbcard");
Getbcard i = new Getbcard();
i.setname();
}
}

then , I compiled it using this command line:
javac -cp c:\myclasses Showbcard.java
and got the appropriated .class file:
Showbcard.class

Now when I try to execute the file like :
java -cp c:\myclasses Showbcard

I get the error : Could not find or load main class Showbcard

What am I doing wrong here ?

Many , many thanks in advance


You only have the path to Getbcard in your classpath. You also need to
add the path to Showbcard, so java knows where to locate it. From the
limited code you've posted it looks as though Showbcard has no package,
so adding "." (the current directory) to the classpath should suffice.
Normally the default classpath will include ".", but by overriding it
with the -cp argument you have removed ".".

I don't use the java command on Windows directly, so I'm not sure of the
exact syntax of the -cp argument in Windows. In UNIX/Linux it's a colon
separated list of paths, but in Windows-land the colon may interfere
with the ":" as a drive letter separator. Check your local documentation
for the java command, failing that Google should find the answer.

--
Nigel Wade

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