diff --git a/core-java/src/main/java/com/baeldung/string/DoubleToString.java b/java-numbers/src/main/java/com/baeldung/string/DoubleToString.java
similarity index 99%
rename from core-java/src/main/java/com/baeldung/string/DoubleToString.java
rename to java-numbers/src/main/java/com/baeldung/string/DoubleToString.java
index d26d26f3df..dd55ba51ad 100644
--- a/core-java/src/main/java/com/baeldung/string/DoubleToString.java
+++ b/java-numbers/src/main/java/com/baeldung/string/DoubleToString.java
@@ -38,4 +38,5 @@ public class DoubleToString {
         return df.format(d);
     }
 
+    
 }
diff --git a/core-java/src/test/java/com/baeldung/string/DoubleToStringUnitTest.java b/java-numbers/src/test/java/com/baeldung/string/DoubleToStringUnitTest.java
similarity index 100%
rename from core-java/src/test/java/com/baeldung/string/DoubleToStringUnitTest.java
rename to java-numbers/src/test/java/com/baeldung/string/DoubleToStringUnitTest.java