formatting with printf while printing an array object

Question

I was wondering if you could do the following:

System.out.printf("%10.2f", car[i]);

Considering that I have redefined the toString() method.

public void toString() {
    return this.getPrice + "" + this.getBrandName;
}

Otherwise how do you format the price you print?

irrelephant · Accepted Answer · 2012-11-24 04:48:08Z

1

Since toString() returns a String, you can format the printed object with %s (see this) but not %f (see this).

You can get the price as a float and print the formatted number along with the brand:

class Car {
    public String toString() {
        return "I'm a car";
    }
    public double getPrice() {
        return 20000.223214;
    }
    public String getBrandName() {
        return "Brand";
    }
}
class Main {
    public static void main(String[] args) {
        Car c = new Car();
        System.out.printf("%10.2f %s", c.getPrice(), c.getBrandName());
    }
}

Output

  20000.22 Brand

(Represent the price in cents if it's easier.)

answered Nov 24, 2012 at 4:48

irrelephant

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Comments

faylon · Accepted Answer · 2012-11-24 05:13:12Z

0

Use String.format() instead.

public void toString() {
    return String.format("%10.2f", this.getPrice) + "" + this.getBrandName;
}

answered Nov 24, 2012 at 5:13

faylon

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