How to cast a String to an object reference?

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Shawn - 19 Sep 2006 14:54 GMT

Dear All,

I have a Person class already. Now I have a String:

public class Person()
{
    void sayHello()
    {
        System.out.println("Hello");
    }

}

Person goodGuy = new Person();

String str = "goodGuy";

(Person)str.sayHello(); //Error: cannot cast from String to Person

This is desireable or I am just totally out of my mind?

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Chris Uppal - 19 Sep 2006 15:01 GMT

> Person goodGuy = new Person();
>
[quoted text clipped - 3 lines]
>
> This is desireable or I am just totally out of my mind?

Er... The latter, I'm afraid.

-- chris

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Robert Klemme - 19 Sep 2006 15:50 GMT

>> Person goodGuy = new Person();
>>
[quoted text clipped - 5 lines]
>
> Er... The latter, I'm afraid.

:-) I was going to say the same.

Shawn, you probably still operate in C++ mode - where such a cast can be
made to work. (Whether it's reasonable is a completely other
discussion.) In Java you will have to write an explicit conversion
either with a constructor of Person that accepts a String or via some
(probably static) method that does the job.

Kind regards

robert

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