calcLine1.java

private static void calcLine(int a, int b, int from, int to) {
	Line l = new Line(a, b);
	for (int x = from; x <= to; x++) {
		int y = l.getY(x);
		System.err.println("(" + x + ", " + y + ")");
	}
}

static class Line {
	public final int a;
	public final int b;
	public Line(int a, int b) {
		this.a = a;
		this.b = b;
	}

	// Inlining
	public int getY(int x) {
		return (a * x + b);
	}
}