Java Exception as checked Exception but not required to be thrown in trycatch

Question

I have this snippet.

public final class StackOverflow{
   class MyException extends Throwable{
   }
   private void a(){
       try{
       }catch(MyExceptio         


        

Answer 1

Exception extends from RuntimeException will considered as uncheched exception, so it's ok:

class MyException extends RuntimeException { }

try {
    ...
} catch (MyException e) {

}

Your exception extends from Throwable, so it is cheched exception. Since the compiler noticed that it is never thrown, so the compile fails.