Question

lets say I have my owndefined datatype like this:

    public class InformationType
    {
        private String brand;
        private int number;
        private double power;

        public PurchaseInfo(String brand, int number, double power)
        {
             this.brand = brand;
             this.number = number;
             this.power = power;
        }
        public String getBrand()
        {
            return this.brand;
        }
        public int getNumber()
        {
            return this.number;
        }
        public double getPower()
        {
            return this.power;
        }
    }

then i have a program which prints strings that is either just a string, an int or a double, and i add them all to an array with the same type as my created one:

      theInfo.add(new InformationType(theBrand, theNumber, thePower))

when I do a loop to just check if i got em right i just get pointers (i think its called) to them and not the real string/int/double. i want to print all my types, without using my getters. this is what i do:

     for (InformationType x : theInfo)
     {
          System.out.println(x);
     }

and i get stuff like InformationType@abcd12412413 etc..

and yeah, i made theInfo with:

     ArrayList<InformationType> theInfo = new ArrayList<>();

thanks.

Answer 1

You need to override toString. e.g.:

public class InformationType {
    ...

    @Override
    public String toString() {
        return "{" + brand + "," + number + "," + power + "}";
    }
}

This will now automatically get called by println.