Json-lib comes in two flavours, depending on the jdk compatibility. Json-lib-x.x-jdk13 is compatible with JDK 1.3.1 and upwards. Json-lib-x.x-jdk15 is compatible with JDK 1.5, includes support for Enums in JSONArray and JSONObject.
January 23, 2007
Second Beta of JSON-lib, Open Source Java Library Released