How to get the package name from a String variable consisting of the java file name??

[Sushmita]

Hi All..
i need a small help...i will present the scenario in the best possible manner please help...

We are asking the user to browse a file...
and using that file path we are getting the java file name, into an String variable.
Now we need to know the package name of that java file for proceeding further...
So can anyone suggest a way to do the same...

Thanks....

[JosAH]

Hi All..
i need a small help...i will present the scenario in the best possible manner please help...

We are asking the user to browse a file...
and using that file path we are getting the java file name, into an String variable.
Now we need to know the package name of that java file for proceeding further...
So can anyone suggest a way to do the same...

Thanks....

You have to open that file for reading; search for the first occurrence of the
words 'pacakge'; skipt the followin spaces and everything up to a semi colon
is the package name. Regular expressions can come in handy here.

kind regards,

Jos

[r035198x]

Hi All..
i need a small help...i will present the scenario in the best possible manner please help...

We are asking the user to browse a file...
and using that file path we are getting the java file name, into an String variable.
Now we need to know the package name of that java file for proceeding further...
So can anyone suggest a way to do the same...

Thanks....

I'd say java classes (not Java files) are the ones that are grouped into packages. The package name is part of the fully qualified name returned by the Class.getName method so if you have the class you can do something like

 public static String getPackageName(Class class) {
       String fullName = class.getName();
       int lastDot = fullName.lastIndexOf ('.');
       if (lastDot == -1) {
           return "default"; //the class is in the default package
       }
       return fullName.substring (0, lastDot);
   }

[Sushmita]

You have to open that file for reading; search for the first occurrence of the
words 'pacakge'; skipt the followin spaces and everything up to a semi colon
is the package name. Regular expressions can come in handy here.

kind regards,

Jos

it worked.. :)
Thanku...