Sandeep thanx for reply but its adding previously checked item again and again.

I was trying this code ListBox1.Items.Add(checkboxlist1.SelectemItem.ToString()); but its not adding the item to listbox. Only adds first item to list box.... please consider and help for it.

is this program right to check whether string is alpha or numeric public boolean isIntNumber(String num){ try{ Integer.parseInt(num); } catch (NumberFormatException nfe) { return false; } return true; }

ok then please tell me how to check a string! in Java.

Actually i was asking the question Q. Write a simple Java program to check whether input value is numeric or alphabet. If alphabet check whether its Capital or or lowwer case. If digit throw user defined exception " Digit not allowed." Actually m new this forum and New to java. Can you please tell me the solution. will be thank full to you. Can this program be written in command line form? Means if we run it from a command prompt. or in AWT only.?

Actually i was asking the question Q. Write a simple Java program to check whether input value is numeric or alphabet. If alphabet check whether its Capital or or lowwer case. If digit throw user defined exception " Digit not allowed." Actually m new this forum and New to java. Can you please tell me the solution. will be thank full to you. Can this program be written in command line form? Means if we run it from a command prompt. or in AWT only.? Sorry if any mistake from my side.

I mean to say that m asking for the solution as m new to java. and m sorry the way i asked question . Actually the question is write simple program.

Simple Java program to check whether input value is numeric or alphabet. If alphabet check whether its Capital or or lowwer case. If digit throw user defined exception " Digit not allowed."

please tell me how to invalidate the session in jsp and where and in which file i have to declare session and declare to remove the session or invalidate the session. AND ON BACK button of browser it should not go back to the account page.

m unable to use the session in jsp, but able to verify the user and password here are the two three file 1. Index file, which has login its code is <%@ page language="java" import="java.util.*" %> <% String msgName=""; cf.usrCode=""; %> Aurum - Library Management System self.moveTo(0,0);self.resizeTo(screen.availWidth,screen.availHeight); function chkCode(){ var ti=document.login.usrName.value; if( ti==""){ document.login.usrName.focus(); alert('Enter Login Name....'); return (false); } }