diff --git a/core-java/src/main/java/com/baeldung/string/StringTest.java b/core-java/src/test/java/com/baeldung/string/StringTest.java
similarity index 100%
rename from core-java/src/main/java/com/baeldung/string/StringTest.java
rename to core-java/src/test/java/com/baeldung/string/StringTest.java