IsRoute.java

//http://coolcodebro.blogspot.com/2012/12/find-out-whether-there-is-route-between.html

boolean isRoute(Vertex source, Vertex target) {
	if(source == null)
		return false;

	if(source.equals(target))
		return true;

	source.visited = true;
	
	for (Edge edge : source.adj) {
		if(!edge.target.visited) {
			if(isRoute(edge.target, target))
				return true;
		}
	}
	
	return false;
}