Method isHex

src/main/java/org/apache/commons/lang3/CharUtils.java:272–274

Tests whether a character is a hexadecimal character. CharUtils.isHex('0') = true CharUtils.isHex('3') = true CharUtils.isHex('9') = true CharUtils.isHex('a') = true CharUtils.isHex('f') = true CharUtils.isHex('g') = false CharUtils.isHex('A') = true CharUtils.isHex('F'

(final char ch)

     * @since 3.18.0
     */
    public static boolean isHex(final char ch) {
        return isAsciiNumeric(ch) || ch >= 'a' && ch <= 'f' || ch >= 'A' && ch <= 'F';
    }

    /**
     * Tests whether a character is a hexadecimal character.