public class A {
	private C c;
	private double value;
	public A(C c) {
		this.c = c;
	}
	public void updateValue(double lat) {
	        this.value = lat;
	}
	public double getValue() {
		return this.value;
	}
	public void updateGPS(double lat2, double long2) {
		this.value = lat2;
		this.c.updateLatitude(this.value);
	}
}