Check Disk Space Utilized in Windows

I had 500GB of Hard-Disk and to my astonishment, i saw that 90% space utilized in my C drive(100 GB). I was wondering where is all 90GB got occupied. It was difficult to check which directory was consuming disk space. After searching on google came across application called SpaceSniffer. This application was able to give me breakup of the directory consuming space on the hard disk.
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Iterate through HashMap using Struts2 Iterator

I am pretty much fond of using JSTL also called as JavaServer Pages Standard Tag Library and tag libraries inside JSP code, the only reason i see it using is to get rid of the JSP scriptlet code written in between HTML codes. But i was stuck at one point when i wanted to iterate through HashMap using Struts Iterator. After much googling i found the solution and in this article we would understand on how to iterate through HashMap using Struts Iterator.
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