Equvivalent in java the "String.fromCharCode"

[jumper2]

Hello,

I have a javascript which is able to crypt an e-mail address on my .jsp side like :
crypted += String.fromCharCode (r.charCodeAt (i) + 1);

I would like to take out this javascript from my .jsp and implement in .java the same functionality.
So far I have done already this like:
crypttext += (myaddr.charAt(i))+1;

My question is, how can I have the same result in .java as I have in the .javascript?

Thank you in advance!

 

[timw]

I don't know JavaScript that well, so it might be helpful if you were a bit more specific about the behaviour you expect from your JavaScript version ...

Tim

 

[Diancecht]

I think you approach should work. What errors are you getting?

Cheers,
Dian

 

[jumper2]

yes, the javascript itself works. There is no problem with.
But what I want that I execute this part:
" crypted += String.fromCharCode (r.charCodeAt (i) + 1);"
in .java and not in javascript!

I need to take out this from javascript because i'm going to implement into a filter which should execute this command but of course in java:

" crypted += String.fromCharCode (r.charCodeAt (i) + 1);

 

[Diancecht]

But you said you've already done is as

crypttext += (myaddr.charAt(i))+1;

What's wrong with this approach?

Cheers,
Dian

 

[jumper2]

This: crypttext += (myaddr.charAt(i))+1; doesn't brings back exactly the same result as I get from javascript.

I think because that " String.fromCharCode" what I execute in javascript I don't do in java, but I don't know which method which is equivalent with it.

 

[Diancecht]

Take a look at the Character class.

Anyway, what differences are you getting? Maybe you're stting a diferent charset/encoding?

Cheers,
Dian

 

[jumper2]

so for instance i have this test user with this test e-mail address: mailto:test.user(at)test.com

on the java side i get this result from the coding:
11098106109117112591171021161174711811610211541981174211710211611747100112110

and on the javascript i get this:
nbjmup;uftu/vtfs)vft*..

 

[timw]

 String v = "asdas";
 int length = v.length();
 StringBuffer b = new StringBuffer();

 for ( int i = 0 ; i < length ; i++ ){
   b.append( (char) (v.charAt(i) + 1) );
 }
 System.out.println(b);

Tim

 

[jumper2]

Thank you so much Tim!

 

[timw]

If you do use a StringBuffer like this, you may also want to add a slight improvement by telling it how much room to allocate ...

 String v = "asdas";
 int length = v.length();
 StringBuffer b = new StringBuffer([b]length[/b]);

 for ( int i = 0 ; i < length ; i++ ){
   b.append( (char) (v.charAt(i) + 1) );
 }
 System.out.println(b);

Tim

 

[jumper2]

yes, thanks a lot, it's also a good idea.

 

[Diancecht]

It's strange, the += option works ok for me.

char c='a';
String b="Hola ";
c++;
b+=c;
System.out.println(b);

Cheers,
Dian