Java determines whether it is a Chinese character

java determines whether it is a Chinese character

Code

/**
 * 判断一个字符是否是汉字
 * PS：中文汉字的编码范围：[\u4e00-\u9fa5]
 *
 * @param c 需要判断的字符
 * @return 是汉字(true), 不是汉字(false)
 */
public static boolean isChineseChar(char c) {
    return String.valueOf(c).matches("[\u4e00-\u9fa5]");
}

Test case

/**
 * 判断一个字符是否是汉字
 *
 * @author Yawei Xi
 * @date 2018-8-20
 */
public class Test {
    public static void main(String[] args) {
        char a = ' ';
        char b = 0;
        char c = 'a';
        char d = '中';
        System.out.println(isChineseChar(a));
        System.out.println(isChineseChar(b));
        System.out.println(isChineseChar(c));
        System.out.println(isChineseChar(d));
    }
    /**
     * 判断一个字符是否是汉字
     * PS：中文汉字的编码范围：[\u4e00-\u9fa5]
     *
     * @param c 需要判断的字符
     * @return 是汉字(true), 不是汉字(false)
     */
    public static boolean isChineseChar(char c) {
        return String.valueOf(c).matches("[\u4e00-\u9fa5]");
    }
}

Test result

false
false
false
true

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