diff --git a/JavaUtils/src/id/ac/ub/filkom/rendicahya/utils/string/operators/Decapitalizer.java b/JavaUtils/src/id/ac/ub/filkom/rendicahya/utils/string/operators/Decapitalizer.java
index 9181274..074022a 100644
--- a/JavaUtils/src/id/ac/ub/filkom/rendicahya/utils/string/operators/Decapitalizer.java
+++ b/JavaUtils/src/id/ac/ub/filkom/rendicahya/utils/string/operators/Decapitalizer.java
@@ -5,4 +5,16 @@
 // Input: "Foo Bar"
 // Output: "foo Bar"
 public class Decapitalizer implements StringMapper {
+
+    @Override
+    public String map(String input) {
+        char[] pisah = new char[input.length()];
+        for (int i = 0; i < input.length(); i++) {
+            pisah[i] = input.charAt(i);
+            pisah[0] = Character.toLowerCase(pisah[0]);
+        }
+
+        return String.valueOf(pisah);
+    }
+
 }