code: private String replaceXYZ(String url, int z, long x, long y) {
  
  		url = url.replaceAll(Z_VARIABLE, String.valueOf(z));
  		url = url.replaceAll(X_VARIABLE, String.valueOf(x));
  		url = url.replaceAll(Y_VARIABLE, String.valueOf(y));
  		return url;
  	}
docs: Replace x, y, and z in the url
  
  @param url
  @param z
  @param x
  @param y
  @return