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On 10/01/2012 06:05 PM, Dennis E. Hamilton wrote:

Regarding the mention that the latest Java VM is using UTF8 internally instead of unsigned short 
arrays is rather daunting.  There is an easy way to test it -- see if char values that are not 
admissible UTF16 codes can be used in construction of a string and then extracted correctly.  If 
they can, there is no way that transformation to and from UTF8 occurred.  If they can't, it is an 
interesting breaking change in Java.  With regard to string literals, it would be interesting to 
see what can be introduced into those via escape codes too.
Note that the JVM traditionally also makes use of a modified form of UTF-8 (encoding surrogate code points individually, and encoding \u0000 as 0xC0 0x80), see the JNI spec. 

Stephan

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