exception

ExceptionFrame9.java

package lesson6;

public class ExceptionFrame9 {

    public static void main(String[] args) {

        ExceptionFrame9 ex = new ExceptionFrame9();

        System.out.println(ex.doDivision(2, 0));
        System.out.println(ex.doDivision(3, 8));
        try {
            ex.toRetire(-2);
            ex.toRetire(5);
            ex.toRetire(70);
        }
        catch (MyPersonalException e) {
            e.printStackTrace();
        }
    }

    public double doDivision(int a, int b) {

        int c = 0;
        try {
            c = a / b;
            System.out.println("turn oven on");
        }
        catch (ArithmeticException e) {

            System.out.println("division by zero is not allowed");
        }
        finally {
            System.out.println("turn oven off)");
        }
        return c;
    }

    public void toRetire(int age) throws MyPersonalException{

        if (age < 0) {
            throw new MyPersonalException();
        }
        else if (age > 65) {
            System.out.println("Welcome to retire");
        }
        else System.out.println("Work a little more");

    }
}

MyPersonalException

package lesson6;

public class MyPersonalException extends Exception {

    public MyPersonalException() {

    }

    @Override
    public void printStackTrace() {

        System.out.println("Enter the correct age");
    }
}