How to create a println/print method for a custom class

Question

I\'m working in Java on a project that requires me to make a few \'container\' classes, if you will. Here is a simple version of one:

public class Pair{

            


        

Answer 1

You'll have to define a toString() method. It's called automatically by System.out.println(Object o). The ArrayList class has such an overridden toString() method that provides a nicely formatted representation.

Basically, overriding Object.toString with your own definition is all that is required.