Equals

gistfile1.txt

package bla;

import java.util.ArrayList;
import java.util.List;

class Coordinates {
	private char x;
	private int y;

	public Coordinates(char x, int y) {
		this.x = x;
		this.y = y;
	}

	public boolean equals(Object o) {
		if (!(o instanceof Coordinates))
			return false;
		Coordinates c = (Coordinates) o;
		return c.x == x && c.y == y;
	}
}

public class Main {

	public static void main(String args[]) {
		List<Coordinates> coords = new ArrayList<Coordinates>();
		List<Coordinates> expecteds = new ArrayList<Coordinates>();
		expecteds.add(new Coordinates('A', 1));
		expecteds.add(new Coordinates('A', 2));
		coords.add(new Coordinates('A', 1));
		coords.add(new Coordinates('A', 2));

		System.out.println(expecteds.equals(coords));
	}
}