What is the motivation of the properties?

Question

I am a little confused why they have these languages. I am a Java programmer at the beginning of my career, so Java is the only language I wrote in, since I actually started, you know, get it.

So, in Java, of course, we have no properties, and we are writing the getThis () and setThat (...) methods.

What do we get with properties?

Thanks.

EDIT: another query: what naming conventions arise in languages ​​with properties?

Answer 1

Which one looks more natural to you?

// A
person.setAge(25)
// B
person.age = 25;
// or
person.Age = 25; //depending on conventions, but that beside the point

Most people will answer B.

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{
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    {
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            OnChanged();
            age = value;
        }

        get { return age; }
    }

    private int age;
    protected virtual void OnChanged() { // ... }
}

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Answer 2

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Answer 3

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        {
            throw new IllegalArgumentException("val must be > 0, was: " + val);
        }

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    }

    public int getBar()
    {
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    }
}

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Answer 5

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  Foo old = getFoo();
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  changeSupport.firePropertyChange("foo", old, foo);
}

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