InteractCRM interview question

In Apti Java - Core java, Multithreading and Exceptions In Apti Database - Some theory questions and basic questions In Programming Test - Given are 3 programs with a comment in between them - //write missing code here. You have to write the code on a paper. 1st Program on Polymorphism in Java 2nd A multithreading program you have to write codes for multithreading 3rd program was on JSP Servlets with JDBC connectivity and xml file. You have to write JDBC code here. The written program test was tough. I cleared all aptitudes but couldn't clear written programs test..