XML Vs JSON

All these days we were learing about XML as only the data transfer technology and the whole world were crazy for learning XML and institutes were earning bucks in the name of XML as it was highly demanded in the era of web technology.But after the incubation of Java Script object notation(JSON) XML has lost its glossiness to some extent in the field of web application.Because the truth behind this is JSON is much more faster than XML as it occupies less memory than its counterpart XML.So imagine if u have to transfer data and with XML it comes 1 MB .By using JSON you can transfer the same data with just 1/2 MB of size.So start using JSON for any server and client data transfer.Also we have java based JSON library a good news for java developer