java - 获取Java语言的unicode字符

Question

Java 中有什么方法可以获取特定语言(例如孟加拉语或阿拉伯语)的所有 Unicode 字符？

Answer 1

java.lang.Character 类有一个名为 UnicodeBlock 的内部静态类。例如，您可以这样获取 Arabic Unicode Block:

Character.UnicodeBlock block = Character.UnicodeBlock.ARABIC;

通过遍历所有字符(或更准确地说，Unicode 代码点)，可以检查每个字符以找到其 Unicode block :

public static void main(String[] args) {
    Set<Character> arabicChars = findCharactersInUnicodeBlock(Character.UnicodeBlock.ARABIC);
    Set<Character> bengaliChars = findCharactersInUnicodeBlock(Character.UnicodeBlock.BENGALI);
}

private static Set<Character> findCharactersInUnicodeBlock(final Character.UnicodeBlock block) {
    final Set<Character> chars = new HashSet<Character>();
    for (int codePoint = Character.MIN_CODE_POINT; codePoint <= Character.MAX_CODE_POINT; codePoint++) {
        if (block == Character.UnicodeBlock.of(codePoint)) {
            chars.add((char) codePoint);
        }
    }
    return chars;
}