Code Points and Code Units

[Sagar Dabas]

I tried to learn these but got confused.

This program gave 62 errors when compiled with command prompt, all of them were illegal expression. I saved the file in UNICODE format.
But when I compiled it using NetBeans there were no errors and the output was 5 , 5 instead of 5 , 6.

The symbol ♭ is represented by two code units or code points?
Whats the difference between code oints and code units?
What is surrogate area?

Please explain.... Thanks..

class UniC
{
public static void main(String args[])
{
String s ="♭THIS";
int n = s.length();
int n1 = s.codePointCount(0,n);
System.out.println(n+" , "+n1);
}
}

[Pierre Sugar]

GIYF http://weblogs.java.net/blog/joconner/archive/2005/08/how_long_is_you.html

[Campbell Ritchie]

The program ran first time on my terminal and printed 5 , 5.
To find out the ♭ symbol, you would have to go to the Unicode Index and look up “flat”; if it is ≤ 0xffff then it is one code point.

[Sagar Dabas]

Can we store supplementary characters in char type......Please explain

I don't know how to type supplementary characters , so I can not check it myself.

Thanks.....

[Winston Gutkowski]

Sagar Dabas wrote:Can we store supplementary characters in char type

No, but Java Strings can handle supplementary characters as a "surrogate pair". I suggest you look at the documentation for java.lang.Character, and particularly the isHighSurrogate() and isSurrogatePair() methods. This page also contains a glossary of useful terms.

Winston

[Sagar Dabas]

Thank you all... you guys are really helpful..