Get the Unicode block or script name for a particular character (code point) in Java

Question

I see the Character class has two nested enums:

• Character.UnicodeBlock
• Character.UnicodeScript

For a particular character, how do I get the appropriate block or script enum object? I expected a pair of methods such as Character.getUnicodeBlock( codePoint ) & Character.getUnicodeScript( codePoint ). But I do not see such methods.

Answer 1

Use enum method of

Look on each enum class rather than Character class. You will find each enum offers an of method to which you can pass a code point.

• Character.UnicodeBlock.of( codePoint )
• Character.UnicodeScript.of( codePoint )

Example:

int codePoint = 2_309;
String text = Character.toString( codePoint );
Character.UnicodeBlock block = Character.UnicodeBlock.of( codePoint );
Character.UnicodeScript script = Character.UnicodeScript.of( codePoint );

System.out.println( "text = " + text );
System.out.println( "block = " + block );
System.out.println( "script = " + script );

text = अ

block = DEVANAGARI

script = DEVANAGARI

Example usage

We can use the of method to find all the characters of a particular script.

IntStream
        .rangeClosed( Character.MIN_CODE_POINT , Character.MAX_CODE_POINT )
        .filter( ( int codePoint ) -> Character.UnicodeScript.of( codePoint ) == Character.UnicodeScript.DEVANAGARI )
        .mapToObj( ( int codePoint ) -> codePoint + ":" + Character.toString( codePoint ) )
        .forEach( System.out :: println );

When run:

2304:ऀ
2305:ँ
2306:ं
2307:ः
2308:ऄ
2309:अ
2310:आ
…