Create CRC16.java (#3733)

* Create CRC16.java

* Create CRC16Test.java

src/test/java/com/thealgorithms/others/CRC16Test.java

@@ -0,0 +1,23 @@
+package com.thealgorithms.others;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class CRC16Test {
+
+    CRC16 crc = new CRC16();
+
+    @Test
+    void testCRC16() {
+        // given
+        String textToCRC16 = "hacktoberfest!";
+
+        // when
+        String resultCRC16 = crc.crc16(textToCRC16); // Algorithm CRC16-CCITT-FALSE
+
+        // then
+        assertEquals("10FC", resultCRC16);
+    }
+
+}