Character Literals

[Sandip Kaviman]

From JLS:
Because Unicode escapes are processed very early, it is not correct to write '\u000a' for a character literal whose value is linefeed (LF); the Unicode escape \u000a is transformed into an actual linefeed in translation step 1 (�3.3) and the linefeed becomes a LineTerminator in step 2 (�3.4), and so the character literal is not valid in step 3. Instead, one should use the escape sequence '\n' (�3.10.6).Similarly, it is not correct to write '\u000d' for a character literal whose value is carriage return (CR). Instead, use '\r'.

char c='\u000a'; gives compilation error while char c='\u000d'; does not?

Any explanation?
Thanks
Sandip

[Paul Clapham]

The paragraph you quoted from the JLS is an explanation for the single line you posted below it. So what exactly are you asking for an explanation for?

[Sandip Kaviman]

according to me char c='\u000d'; should not compile ...

[Ben Souther]

"Sandip K",
Welcome to JavaRanch!

We're pleased to have you here with us here on the ranch, but there are a few rules that need to be followed, and one is that proper names are required. Please take a look at the JavaRanch Naming Policy and adjust your display name to match it.

In particular, your display name must be a first and a last name separated by a space character, and must not be obviously fictitious. You can change it here
[ March 05, 2008: Message edited by: Ben Souther ]

[Mike Simmons]

Sandip, my compiler agrees with you:

public class Test {
    public static void main(String[] args) {
        char c='\u000d';
    }    
} 

$ javac Test.java
Test.java:3: illegal line end in character literal
        char c='\u000d';
               ^
1 error

Are you sure you compiled the right code?

[Sandip Kaviman]

Yes, I did, might be difference in the compiler, I have
java version "1.5.0_02"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_02-b09)
Java HotSpot(TM) Client VM (build 1.5.0_02-b09, mixed mode)

Anyway Thanks Mike

Thanks
Sandip

[Mark Herschberg]

"Sandip K",

Perhaps you were unclear on the naming policy after Ben's prior message. Please look carefully at the official naming policy at JavaRanch & reregister yourself with a proper first & last name, with a space between them. Initials may be used for a first name, but not a last name. Please adhere to official naming policy & help maintain the decorum of the forum. The naming policy can be found at http://www.javaranch.com/name.jsp. You can change your name here.

--Mark