What is ConnectionPool class in Java.When and Why it is used in JDBC?

Can you load the server object dynamically? If so what are the 3 major steps involved in it?

How to print the search result in a table from?

How to redirect a web page by embedding an Applet in it or by clicking a button on a Applet?

How can I design a form (using java as the front-end with SQL server as the back-end) which can redirect to another page and inturn another and so on?

Why Java does not support preprocessor directives?

What would be the object size of class without a member ( i.e. no method and no variable) is created?Explanation : For sure, Object size will not zero as we print the object on console, hash code get printed, the object has existence in memory.

I want to read and write data from excel sheet

Because they are used as part of a larger applications.