Emergency Pls do help ...........................
What is the use of listener in Servlet?
What is a null interface and why are they used?
What is a singleton class? Why are they used? How can we implement it in Java?
A program which counts words of a sentence, count it and display the result on the screen.
What is difference between HTML and XHTML?
Why cannot be Static method overridden?
What is SQL injection?
If there are two hash map map1 and map2 with elements 2000 and 4000 then which is faster while searching?
What is difference between Servlet and JSP?
What are the steps to configure Tomcat server?
In java how are values and object passed in the method?
If I want to disable the button in the JSP page without using the JavaScript then how can we do it?
If I have four different pages and want to pass the parameter in different pages then what should a developer do?

