java - Three exceptions for int -

i trying create code int supposed entered , have exceptions if int not between 9 , 99, exception if double entered instead of int , third exception if string entered. how do this? have below have far not sure how correct it. thanks

public static void main(string[] args) {     scanner input = new scanner(system.in);     boolean correct = true;     {         try {             system.out.println("enter integer between 9 , 99");             int number = input.nextint();             if (number >= 9 && number <= 99) {                 system.out.println("thank you, initialization completed");                 correct = false;             } else if (number < 9 || number > 99) {                 throw new exception("integer not within range");             }             if (input.hasnextdouble()) {                 throw new exception("integer not entered");             } else {                 correct = false;             }             if (input.hasnext("")) {                 throw new numberformatexception("integer not entered");             } else {                 correct = false;             }         } // check range         catch (exception e1) {             system.out.println("number not within 9 , 99");             system.out.println();             input.nextline();         } catch (exception e2) {             system.out.println("an integer not entered");             system.out.println();             input.nextline();         } catch (numberformatexception e3) {             system.out.println("an integer not entered");             system.out.println();             input.nextline();         }     } while (correct); } 

method .getmessage() returns string given in constructor:

throw new exception("here"); 

when catch exception, catch numberformatexception, inputmismatchexception, etc. must catch broader ones last.

catch (numberformatexception e3) { // precisier goes first     system.out.println("an integer not entered");     system.out.println();     input.nextline(); } catch (exception e1) {     system.out.println(e1.getmessage());     system.out.println();     input.nextline(); }