telling if a class is loaded

[drsmooth]

if i use this:

Class.forName("org.apache.derby.jdbc.EmbeddedDriver");

how can i tell later on that it is loaded...im not sure i totally understand what the .forName does...

thanks alot,
ken

[JosAH]

if i use this:

Class.forName("org.apache.derby.jdbc.EmbeddedDriver");

how can i tell later on that it is loaded...im not sure i totally understand what the .forName does...

thanks alot,
ken

If the method returns the class is loaded (and linked). If it throws an exception
at you, you can be sure it isn't loaded nor linked. Read the API documentation.

kind regards,

Jos

[drsmooth]

ok now i understand what it is, but i was wondering if theres a way of checking at a later time than when it is called if it was loaded...

[BigDaddyLH]

ok now i understand what it is, but i was wondering if theres a way of checking at a later time than when it is called if it was loaded...

Are you sure you need to know that? What are you trying to do? What is your goal?

[drsmooth]

Are you sure you need to know that? What are you trying to do? What is your goal?

im trying to eliminate multiple calls to it, i wrote a class to read/write info from/to a databse, but the methods are static and im not sure how to tell if the class is already loaded...i believe i have figured it out, i put an init() method that i call when the program is loaded so i suppose that will work, havent really tested it yet though

thanks alot,
ken

[JosAH]

im trying to eliminate multiple calls to it, i wrote a class to read/write info from/to a databse, but the methods are static and im not sure how to tell if the class is already loaded...i believe i have figured it out, i put an init() method that i call when the program is loaded so i suppose that will work, havent really tested it yet though

thanks alot,
ken

The 'forName()' method doesn't reload a class once it is loaded and returns quite
quickly. IMHO it isn't worth the trouble to guard against multiple calls but if you
must, create a simple singleton that only calls this method when the singleton
itself is created.

kind regards,

Jos

[drsmooth]

The 'forName()' method doesn't reload a class once it is loaded and returns quite
quickly. IMHO it isn't worth the trouble to guard against multiple calls but if you
must, create a simple singleton that only calls this method when the singleton
itself is created.

kind regards,

Jos

yeah..it seemed to be taking the time everytime i called it...possible because of the fact i was working off a flash drive lol...

thanks alot,
ken