diff --git a/core-java-modules/core-java-8-2/src/main/java/com/baeldung/interfaceVsAbstractClass/ChidlCircleInterfaceImpl.java b/core-java-modules/core-java-8-2/src/main/java/com/baeldung/interfaceVsAbstractClass/ChidlCircleInterfaceImpl.java
index 991ccad4d7..2aadf2e2e8 100644
--- a/core-java-modules/core-java-8-2/src/main/java/com/baeldung/interfaceVsAbstractClass/ChidlCircleInterfaceImpl.java
+++ b/core-java-modules/core-java-8-2/src/main/java/com/baeldung/interfaceVsAbstractClass/ChidlCircleInterfaceImpl.java
@@ -3,6 +3,7 @@ package com.baeldung.interfaceVsAbstractClass;
 public class ChidlCircleInterfaceImpl implements CircleInterface {
     private String color;
 
+    @Override
     public String getColor() {
         return color;
     }
diff --git a/core-java-modules/core-java-8-2/src/main/java/com/baeldung/interfaceVsAbstractClass/CircleInterface.java b/core-java-modules/core-java-8-2/src/main/java/com/baeldung/interfaceVsAbstractClass/CircleInterface.java
index ee29cdd659..1e01480c3f 100644
--- a/core-java-modules/core-java-8-2/src/main/java/com/baeldung/interfaceVsAbstractClass/CircleInterface.java
+++ b/core-java-modules/core-java-8-2/src/main/java/com/baeldung/interfaceVsAbstractClass/CircleInterface.java
@@ -6,8 +6,10 @@ import java.util.List;
 public interface CircleInterface {
     List<String> allowedColors = Arrays.asList("RED", "GREEN", "BLUE");
 
-    public default boolean isValid(String color) {
-        if (allowedColors.contains(color)) {
+    String getColor();
+    
+    public default boolean isValid() {
+        if (allowedColors.contains(getColor())) {
             return true;
         } else {
             return false;
diff --git a/core-java-modules/core-java-8-2/src/test/java/com/baeldung/interfaceVsAbstractClass/InterfaceVsAbstractClassUnitTest.java b/core-java-modules/core-java-8-2/src/test/java/com/baeldung/interfaceVsAbstractClass/InterfaceVsAbstractClassUnitTest.java
index 88a0c3bd19..ecaacc4b21 100644
--- a/core-java-modules/core-java-8-2/src/test/java/com/baeldung/interfaceVsAbstractClass/InterfaceVsAbstractClassUnitTest.java
+++ b/core-java-modules/core-java-8-2/src/test/java/com/baeldung/interfaceVsAbstractClass/InterfaceVsAbstractClassUnitTest.java
@@ -16,6 +16,6 @@ public class InterfaceVsAbstractClassUnitTest {
     public void givenInterface_whenValidCircleWithoutStateUsedThenPass() {
         ChidlCircleInterfaceImpl redCircleWithoutState = new ChidlCircleInterfaceImpl();
         redCircleWithoutState.setColor("RED");
-        assertTrue(redCircleWithoutState.isValid(redCircleWithoutState.getColor()));
+        assertTrue(redCircleWithoutState.isValid());
     }
 }