Question

I have a problem with the print of my Vector:
i have this Vector:

Vector<StructRicetta> Ricetta=new Vector<StructRicetta>();

The class StructRicetta:

public class StructRicetta {
    String nomeric;
    int n;
    Vector<String> ingrediente=new Vector<String>();
    Vector<String> quantita=new Vector<String>();
    Vector<Boolean> facoltativo=new Vector<Boolean>();
    String preparazione;
}

I read the value of this structure from a file.
And in the reader function i return to a StructRicetta type and i add it in the vector:

Ricetta.add(Myclass.reader());

Now how can i print the results??

Thank you!

Answer 1

You’re going to have to add a toString() method to your classes, and then iterate through the Vectors.

Perhaps iterate and add each entry to a StringBuilder, and separate using commas or similar ? Apache Commons StringUtils.join() will do this in one call for you.

Note. Vector is largely deprecated these days (it’s methods are synchronised by default, which is a little wasteful) and you should look at ArrayList or similar instead.