B.java:7: cannot access A--bad class file: .\A.java

[Narasimha Raju Naidu]

hi to all,

i am facing the following error while accessing methods of another class.

Error

B.java:7: cannot access A
bad class file: .\A.java
file does not contain class A
Please remove or make sure it appears in the correct subdirectory of the classpa
th.
A a=new A();
^
1 error

my program code

    
 
package pan.dawn;
import java.sql.*;
import java.io.*;
 
public class A
{
public void setConnection()
{
try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con=DriverManager.getConnection("Jdbc:Odbc:temp","trainees","trainees");
System.out.println("Connection Created ::::::Hello World!");
}
catch (Exception e)
{
e.printStackTrace();
}
}
 
}
 

    
 
 import pan.dawn.*;
 
public class B
{
public static void main(String args[])
{
A a=new A();
a.getConnection();
System.out.println("hi");
}
}

i compiled A.java with the 'javac -d . A.java and B.java with javac B.java

While compiling B.java i am getting the above error.

Please can any one tell how to resolve my problem.

Waiting for your valuable replys.

Regards,
Narasimha Raju.Naidu

[Campbell Ritchie]

Not certain, but it sounds as though your file and directory structure might not be quite right. You might not have the naming of the A and B files quite right, too.

Try compiling A first with the -d tag:

javac -d . A.java

then

javac -d . B.java

or both together

javac -d . A.java B.java

That might help.

[Narasimha Raju Naidu]

Thanks for your valuable reply. right now i am not in front of my system. i will. if it suceeded then how to compile my program B.java


regards,

[Narasimha Raju Naidu]

hi friends,

Still i am getting the same error.

can any one resolve

Regards
[ April 16, 2008: Message edited by: Narasimha Raju Naidu ]

[Parthiban Malayandi]

Hi Narasimha,

Did your java file "A" is inside a correct package structure?
It should be in a directory called "dawn" which itself a subdirectory to "pan"

(i.e) "A" file should be in pan\dawn\A.java

The java file "B" should be outside to "pan" directory

Put your files like that way and try it

[Ninad Sabnis]

Hi,

I think the given error is because of * placed after package name.[packagename.*;].

If you place a particular class name insted of *, it compiles successfully.

Reason is , when we use -d option, it moves only .class file to the package hierarchy but leaves .java file at original location.

So because we are using *, compiler dont know the class to use at starting, and thus looks for required class file in current directory insted of package. In current directory it gets .java file for that class, so it skips searching and compiles .java [ hope without -d option] and place the .class file at current directory [without creation of hierarchy] which is not reght as we have decleared package in source file.

To overcome this problem we either need to move .java file to same package hierarchy created after compilation of it using -d option,
or move to other location / delete the source file after compiling it using -d option.

If anyone have more useful way to deal with this, please do post.

[Henry Wong]

Ninad Sabnis wrote:
If anyone have more useful way to deal with this, please do post.

Since this topic is more than a year old, I think it is safe to assume that the OP has figured out how to compile a program by now. And BTW, welcome to the Ranch.

Henry