diff --git a/java/lc-mecha/src/main/java/lc/mecha/math/RadixConverter.java b/java/lc-mecha/src/main/java/lc/mecha/math/RadixConverter.java
index c9297bc6254f75e555e07deaf7a7baa1c589eb42..954b31b135a8a140bf2c1b44cd51dcbc86bb99a7 100644
--- a/java/lc-mecha/src/main/java/lc/mecha/math/RadixConverter.java
+++ b/java/lc-mecha/src/main/java/lc/mecha/math/RadixConverter.java
@@ -7,6 +7,7 @@ import org.apache.commons.lang.StringUtils;
  *
  * @author Alex Leigh
  */
+@Deprecated
 public class RadixConverter {
     public static final String RADIX36 = "0123456789abcdefghijklmnopqrstuvwxyz";
     private final String code;
@@ -25,6 +26,7 @@ public class RadixConverter {
     /**
      * Encode the given number into the arbitrary radix code specified by this class.
      */
+    @Deprecated
     public String encode(int num) {
         int j = (int) Math.ceil(Math.log(num) / Math.log(code.length()));
         StringBuffer text = new StringBuffer();
@@ -40,6 +42,7 @@ public class RadixConverter {
      * Decide the given number in strong format to an integer, using the arbitrary radix code specified by this
      * class.
      */
+    @Deprecated
     public int decode(String text) {
         int num = 0;
         int j = text.length();