hai
find the index of '@' and check whether it is first character or not
you can find the index by using indexOf(char) of string class
Fei Fei Lua wrote:
> i've been trying to do some validation on email format from a html form, i need to
> read " @email.com.cc" and prompt to user that it is not a valid email format which
> should be "[EMAIL PROTECTED]" instead.
>
> how do i do this ? is this the norm of email validation ???
> below is my program, when i run i have nullpointer exception at
> MemberBean.testEmail
> thank you for your attentions and inputs.
>
> ********************************************
> import java.util.*;
> import java.lang.*;
>
> class MemberBean {
>
> double Day;
> double Month;
> double Year;
> String Email;
> String DOB;
> char e1, e2, e3;
> StringTokenizer T;
>
> MemberBean (double day, double month, double year, String email, String dob) {
>
> Day = day;
> Month = month;
> Year = year;
> Email = email;
> DOB = dob;
> }
>
> boolean testDate() {
>
> if(Month >=1&&Month <=12){
> if(Day >=1&&Day <=31){
> System.out.println("Date Validation Passed");
> }else
> System.out.println("Invalid Day");
> }else
> System.out.println("Invalid Month");
>
> return false;
> }
>
> void testEmail(){
>
> int l = 0;
> String stringArray[] = new String[20];
> StringBuffer sbuf = new StringBuffer(Email ); // create a StringBuffer
>
> int s[ ] = new int[ 20 ]; // array to hold length of
> // each string
> // Build a StringBuffer with all the Strings concatenated
> for (int i = 0; i < 20; i++ )
> {
> s[ i ] = stringArray[ i ].length(); // save the length of each
> l += s[ i ]; // and the total length
> sbuf.append(stringArray[ i ]); // concatenate the next string
>
> }
> String result = new String( sbuf ); // convert to String
> char ch[ ] = new char[ l ]; // create the char array
> ch = result.toCharArray( ); // and convert to char array
>
> System.out.println("Email "+ ch[l]);
> //*************************************************
> // if(ch!='@'){
> // System.out.println("Email Validation passed "+ ch);
> // S.pop();
> // }else
> // System.out.println("Invalid Charater "+ ch);
>
> }
>
> }
>
> class verifyBean {
> public static void main(String args[]) {
>
> MemberBean verify1 = new MemberBean(1,12,00, "[EMAIL PROTECTED]", "12/08/78");
> MemberBean verify2 = new MemberBean(32,01,00, "[EMAIL PROTECTED]", "22/02/76");
>
> boolean date = false;
> date = verify1.testDate();
> verify1.testEmail();
> date = verify2.testDate();
>
> }
> }
> ********************************************
>
> deepty kj wrote:
>
> > hi,
> > Better to use scripts for client side validation. If u need server-side
> > validation use Bean.
> >
> > deepati
> >
> > On Tue, 23 May 2000 11:39:03 +0800, A mailing list about Java Server Pages
> > specification and
> > reference wrote:
> >
> > > hi Gurus,
> > >
> > > can you pls show me the way to validate Email format (on html/jsp form
> > > input) ?
> > > what's the best way of doing it ? bean ? script ?
> > >
> > > thank you for your attention,
> > > fay
> > >
> > >
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>
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