<%@ page language=\"java\" import=\"net.sf.json.JSONArray\" %>
<%
JSONArray arrayObj=new JSONArray();
arrayObj.add(\"MCA\");
arrayObj.add(\"Amit K
Either the JSON library is not there where you think it is, or the JAR file of the JSON library which you've downloaded simply doesn't contain that class. Investigate the JAR file using a ZIP or RAR tool. There should be a net/sf/json/JSONArray.class
file inside the JAR. If it is missing, then you probably downloaded the wrong library.