1. No U can not catch the error.2. Error like stack over flow at run time which is diffrent from Exceptions exception are like the will come every time as in general there is sth wrong in your code, this kinda error will happen at run time depends on that perticular situation.
Error exceptions indicate a very serious problems that are usually unrecoverable and should never be caught. Its not a good idea to catch Error exceptions by 'try-catch' blocks.
But 'finally' clause will always be executed when any exception-including 'Error' exceptions- comes up in the call stack, so you can always clean up after any exception.
2. Runtime exceptions are exceptions that extends the RuntimeException class and are called unchecked exceptions.
Compiler checks only the checked exceptions meaning, that your method throws only those exceptions that they have declared themselves to throw.Unchecked exceptions are thrown during runtime and are not checked by compiler, which extends the 'Exception' class but not 'RuntimeException' class.
No, because error is not related to ur progamming envirnment through which we can apply our exception handling mecanism. It occurs only due to operating system failure, System virus affected etc.
