package importing problem

[Johnson K Jose]

I have a java program called Balance.java which I have saved in H:\myPack.

 
package myPack;
public class Balance
{
String name;
double bal;
public Balance(String n, double b)
{
name = n;
bal  = b;
}
public void show()
{
if(bal<0)
System.out.println("-->");
System.out.println(name+": $"+bal);
}
}
 

I compiled and kept my Balance.class file in H:\myPack.
now I have another program (TestBalance.java saved in H:\> )which is using Balance.java program

import myPack.*;
public class TestBalance
{
public static void main(String arg[])
{
Balance test = new Balance("Johnosn", 1000.0);
test.show();
}
}

while compileing I am geting the following error
H:\>javac TestBalance.java
TestBalance.java:1: package myPack does not exist
import myPack.*;
^
TestBalance.java:6: cannot resolve symbol
symbol : class Balance
location: class TestBalance
Balance test = new Balance("Johnosn", 1000.0);
^
TestBalance.java:6: cannot resolve symbol
symbol : class Balance
location: class TestBalance
Balance test = new Balance("Johnosn", 1000.0);
^
3 errors
----------------------------------
but I can able to run the code if I include the Balance class inside the TestBalance.java file.
like

public class TestBalance
{
public static void main(String arg[])
{
Balance test = new Balance("Johnosn", 1000.0);
test.show();
}
}
class Balance
{
String name;
double bal;
public Balance(String n, double b)
{
name = n;
bal  = b;
}
public void show()
{
if(bal<0)
System.out.println("-->");
System.out.println(name+": $"+bal);
}
}

I doubt some how my code is not able to locate the package, is this may be due to some 'CLASSPATH' setting? not able to find out!
Thanks in advance
Regards
Johnson

[Sridhar Srikanthan]

Hi Johnson,
It seems there is a CLASSPATH problem. IN order for a package to be found, the classpath should be till before the directory. In your example. the classpath should consist of the path till H:\
even though the .class file is in H:\mypath.
Hope this helps
Sri

[Leandro Oliveira]

Yes, try setting the classpath to the H, but i think it should compile, the compiler tries to find it without the class path!!! maybe there is something wrong with your compiler!!! I tested on j2sdk 1.4, and it works, i did not set the classpath to the directory.

[John Paverd]

This should help:Mastering the Java classpath

[Tom Adams]

One thing to remember is that importing stuff is all about where the class files are and that your classpath points the "root" for the packages you want to use.
Where your source code is really doesn't matter (except in some project build master's / source control nazi's head...but I'm getting off topic here).