Java - Throwable to Exception

Question

I am currently using the play2 framework.

I have several classes which are throwing exceptions but play2s global onError handler uses throwable

Answer 1

In addition to checking if its an instanceof you can use the try catch and catch NoSessionException

try {
    // Something that throws a throwable
} catch (NoSessionException e) {
    // Its a NoSessionException 
} catch (Throwable t) {
    // catch all other Throwables
}