Casting a Throw Exception

Why won't my throw exception work?!?! :@:

DRIVER:

Code:

---

public class Driver {        public static void main(String[] args)
        {
                //MAIN IS FOR TESTING PURPOSES ONLY
                //object created with new class; example of setting age&name + output results
                Person me=new Person();
                me.setAge(125);
                me.setName("Robert");
               
                System.out.println(me.getName() + " is currently " + me.getAge() + " years old.");
               
                //PRINTING THE OBJECT ITSELF
                System.out.print(me);


        }

}

---

CLASS:

Code:

---

public class Person {

        //variables that store a Person's weight and age(not directly accessable by client)
        private int age;
        private String name;
       
        //mutator method that makes sure the person is of valid age. Error otherwise.
        public void setAge(int a) throws IllegalArgumentException{
                if(a>=1||age<=95)
                {
                        //changes the instance variable based on clients input.
                        age=a;
                }
                else
                {
                        throw new IllegalArgumentException("Invalid Age.");
                }
        }
       
        //mutator method that assigns what the client inputs to the instance variable
        public void setName(String n)
        {
                name=n;
        }
       
        //accessor method that returns the values in the corresponding instance variable (the person's age).
        public int getAge()
        {
                return age;
        }
       
        //accessor method that returns the values in the corresponding instance variable (the person's name).
        public String getName()
        {
                return name;
        }
}

---

OUTPUT: Robert is 125 years old.

Shouldn't it display an error? (DUE TO MY THROW EXCEPTION :(doh):)

if(a>=1||age<=95)

1. why age ? do you mean "a" too here or? :)
2. because the first condition is true 125 >= 1 --> yes, so the second condition is not tested
3. try && instead of || :D

--> if (a >= 1 && a <= 95) {

THANK YOU YOUR A GENIUS :D - hits myself -

Last quesiton: when printing the object itself, why does it output: Person@4e82701e

When you print an instance of a class you made yourself, it uses the default implementation of toString(), unless you explicity override it, like so:

Code:

---

class Person{
    //constructor(s), field(s), other method(s)

    @Override
    public String toString(){
        //return whatever you want to be printed when you print the object itself
    }
}

---

so why did it print out 'Person@4e82701e'

What does toString() do?? where did everything after the @ come from?

The thing after the @ is the hexadecimal memory address of the object.