add method

hutool-core/src/main/java/cn/hutool/core/io/checksum/CRC16.java

@@ -17,7 +17,7 @@ public class CRC16 implements Checksum, Serializable {
 
 	private final CRC16Checksum crc16;
 
-	public CRC16(){
+	public CRC16() {
 		this(new CRC16IBM());
 	}
 
@@ -26,10 +26,31 @@ public class CRC16 implements Checksum, Serializable {
 	 *
 	 * @param crc16Checksum {@link CRC16Checksum} 实现
 	 */
-	public CRC16(CRC16Checksum crc16Checksum){
+	public CRC16(CRC16Checksum crc16Checksum) {
 		this.crc16 = crc16Checksum;
 	}
 
+	/**
+	 * 获取16进制的CRC16值
+	 *
+	 * @return 16进制的CRC16值
+	 * @since 5.7.22
+	 */
+	public String getHexValue() {
+		return this.crc16.getHexValue();
+	}
+
+	/**
+	 * 获取16进制的CRC16值
+	 *
+	 * @param isPadding 不足4位时，是否填充0以满足位数
+	 * @return 16进制的CRC16值，4位
+	 * @since 5.7.22
+	 */
+	public String getHexValue(boolean isPadding) {
+		return crc16.getHexValue(isPadding);
+	}
+
 	@Override
 	public long getValue() {
 		return crc16.getValue();