using UTF-8 characters in JAVA variable-names

Question

I would like to know that can I use my native language characters (or String) as JAVA variable names ? So, I had tested as below with Myanmar Unicode.

    public static void main(final String[] args) {
    String ဆဆဆ = "မောင်မောင်";
    System.out.println("ကောင်းသောနေ.ပါ " + ဆဆဆ);
}

This code show my successful message as 'ကောင်းသောနေ.ပါ မောင်မောင်'. But in below code with another variable name (it also my native language String).....

    public static void main(final String[] args) {
    String တက်စတင်း = "မောင်မောင်";
    System.out.println("ကောင်းသောနေ.ပါ " + တက်စတင်း);
}

that produce compile time error in my Ecliplse IDE.

Multiple markers at this line - Syntax error on tokens, delete these tokens - Got an exception - Unexpected character 0x103a in identifier

Any suggestion ? Why would this problem has occured ? Thanks for reading my question patiently.......

Answer 1

Java 6 merely supports Unicode 4.0, a quite old version of Unicode which doesn't include Myanmar (or at least only rudimentary). Extended Myanmar support was added to Unicode 5.1, which is supported in Java 7.

To resolve this issue, install JDK 7 if you haven't already, and configure your Eclipse project to compile as Java 7 (Project->Properties->Java Compiler). Please note that code compiled as Java 7 cannot be run on Java 6 or lower.