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→Useful links for Programming
:[http://www.java2s.com/Code/Java/Swing-JFC/EditabilityExample.htm java2s - good examples]
:[http://java.comsci.us/examples/swing/ Java Swing Package examples]
*C#
:[http://www.exforsys.com/tutorials/asp.net/validating-user-input-with-csharp.html About Validators]
*C, C++ Tutorials