java UTF8 etc. (Re: Upgrading driver from 7.4 to 8.1) - Mailing list pgsql-jdbc

Tom Lane <tgl@sss.pgh.pa.us> writes:

> FWIW, I think that Java clients don't need to worry about those security
> issues.  It's not possible for Java to emit an invalidly-coded UTF8
> string, is it?  I thought that the internal representation of strings
> is UCS2 or UCS4, and if so, it would take some exceedingly broken
> code in the JVM for the output not to be valid UTF8.

It's UTF-16, just like Windows XP and above.

 http://java.sun.com/developer/technicalArticles/Intl/Supplementary/

FYI there are two ways to output UTF8:

DataOutputStream.writeUTF()
 outputs a non-standard UTF8, and is limited in size.

From 1.4:
 Charset.forName("UTF-8")....encode()
  outputs standard UTF8