I have edited the above post to include those parts that I had just left out. I further found that jar files were missing. So I added jstl-1.2.jar and javax.el.jar.
did the magic. Now only two jars jstl.jar and standard.jar are doing all the work. No need to go for other jars.
Please check THIS link.
Here you get information regarding configuration for JSTL usage.