NewStringUTF conversion of euro character

[Hicks]

This is a JNI question related to C/Java. I'm using j2sdk1.4.2_03.

I have a string containing a euro character € and I'm using
NewStringUTF to convert it from a native char* into a jstring. However
when the jstring is passed from the C code into a Java method, the
euro character has been converted into a '?' character.

As a test, I tried calling GetStringUTFChars in the C code to see if
the string could be converted back to a char*, and the returned value
seems to have an extra character inserted before the euro symbol (see
output).

Does anyone have any experience with this, or can offer advice on
what's happening?



proEAI_Debug (EAIDBG_PROC, "EAI_JAVA: EAIRun_Call() - Tokenized field
info is: %s", results);

resultJString = (*javaEnv)->NewStringUTF(javaEnv, (const char *)
results);

utf_string = (*javaEnv)->GetStringUTFChars(javaEnv, resultJString,
&isCopy);
proEAI_Debug (EAIDBG_PROC, "EAI_JAVA: EAIRun_Call() - utf_string =
%s", utf_string);

---------------------------- Output ----------------------------------

040629171739.474712:x004: EAI_JAVA: EAIRun_Call() - Tokenized field
info is: NAME2F07
TEXTMEMA200
MAXLENDDDDDDDD2A200
NAMETAX1MF08
NAMETAX1A200
AMEMOF01
ATEXTA200test1€

040629171739.474893:x004: EAI_JAVA: EAIRun_Call() - utf_string =
NAME2F07
TEXTMEMA200
MAXLENDDDDDDDD2A200
NAMETAX1MF08
NAMETAX1A200
AMEMOF01
ATEXTA200test1€

 

[Roedy Green]

I have a string containing a euro character € and I'm using
NewStringUTF to convert it from a native char* into a jstring. However
when the jstring is passed from the C code into a Java method, the
euro character has been converted into a '?' character.

Is there a method to tell you what the native C encoding is? You can
then play with translations in pure Java to see if there is a bug in
the translate table. The Euro was only recently added.

See http://mindprod.com/jgloss/encoding.html

Check out the control panel in windows. Perhaps you have an old
encoding configured as the default or out of date translate tables.

See also Wassup to find out the default encoding in Java.

http://mindprod.com/wassup.html