Convert 'chr' php function in jsp

Hello everybody
I'll try to convert this php code in jsp but i've got several errors when using the "replaceAll" java function.
I aim to have an html editor to insert it in my website forum.
Can somebody help to solve this problem, otherwise, can anyone provide me an example of an html editor written in jsp.
$conceptRTEvalue = str_replace(chr(92).chr(34),chr(34),$conceptRTEvalue);
//convert all types of single quotes
   $tmpString = str_replace(chr(145), chr(39), $tmpString);
   $tmpString = str_replace(chr(146), chr(39), $tmpString);
   $tmpString = str_replace("'", "'", $tmpString);
   //convert all types of double quotes
   $tmpString = str_replace(chr(147), chr(34), $tmpString);
   $tmpString = str_replace(chr(148), chr(34), $tmpString);
   //replace carriage returns & line feeds
   $tmpString = str_replace(chr(10), " ", $tmpString);
   $tmpString = str_replace(chr(13), " ", $tmpString);

What are the errors?

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I am looking someone to help me w/o $.Go away.
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