Iava is an interpreter that accepts a subset of the Java programming language which includes method declarations, all block statements, all statements and all expressions as specified by the Java language. The interpreter does not accept class or interface declarations. Iava is written in Java and can be embedded into any Java application and applet. It offers highly effective integration mechanisms (sharing of private fields between classes and scripts), declaration of “methods” in a script which can be invoced by the embedding application/applet, sharing of a “context” object to which scripts can refer to using “this”, etc.