A kde je problém?

Bod.java

public class Bod {
	
	private final int x;
	private final int y;

	public Bod(int x, int y) {
		this.x = x;
		this.y = y;
	}
	
	public int getX() {
		return x;
	}

	public int getY() {
		return y;
	}
}

public class Vzdalenost {

	private final Bod a;
	private final Bod b;
	private final Bod c;

	public Vzdalenost(Bod a, Bod b, Bod c) {
		this.a = a;
		this.b = b;
		this.c = c;
	}

	public double pocitej() {
		double rozdil = 0;

		/* kod pro vypocet sem */

		return rozdil;
	}
}