How to instantiate class from with class.forName()

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2

Unhandled exception type ClassNotFoundException

That means the compiler is expecting you to surround the class loading function(s) with an exception handling block. Namely, the try and catch blocks.

At a minimum, you could do something like this:

try {
  // load class by name, etc.
}
catch(Exception ex)
{
  println("Something went wrong");
  println(ex.toString());
}

Of course, that will print the same message (plus the built-in) for any error.

The message you are getting is calling out for something more like this:

try {
  // load class by name, etc.
}
catch(ClassNotFoundException ex)
{
  println("Class not found");
}
catch(IllegalAccessException ex)
{
  println("Do you have permission for that?");
}
catch(InstantiationException ex)
{
  println("Could not instantiate object");
}

It is up to you how much detail you want from the exception handling.

For more, take a look at Lesson: Exceptions (The Java™ Tutorials > Essential Java Classes)

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