diff --git a/.github/workflows/add-reviewers.yml b/.github/workflows/add-reviewers.yml
new file mode 100644
index 0000000..7401073
--- /dev/null
+++ b/.github/workflows/add-reviewers.yml
@@ -0,0 +1,26 @@
+name: Add Requester
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK 1.8
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.8
+
+    - name: Grant execute permission for gradlew
+      run: chmod +x gradlew
+
+    - name: Add Reviewers
+      uses: madrapps/add-reviewers@main
+      with:
+        token: ${{ secrets.GITHUB_TOKEN }}
+        reviewers: saravana-thiyagaraj,instrap,muralikrish91,thsaravana
+        debug-mode: true
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index a24a65a..8ee67f2 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -2,7 +2,6 @@ name: Measure coverage
 
 on:
   push:
-    branches: [ main ]
   pull_request:
 
 jobs:
@@ -29,13 +28,13 @@ jobs:
 
     - name: Jacoco Report to PR
       id: jacoco
-      uses: madrapps/jacoco-report@v1.1
+      uses: madrapps/jacoco-report@v1.3_baseSHA
       with:
-        path: ${{ github.workspace }}/build/reports/jacoco/testCoverage/testCoverage.xml
+        paths: ${{ github.workspace }}/build/reports/jacoco/testCoverage/testCoverage.xml
         token: ${{ secrets.GITHUB_TOKEN }}
         min-coverage-overall: 40
         min-coverage-changed-files: 60
-        debug-mode: false
+        debug-mode: true
 
     - name: Get the Coverage info
       run: |
diff --git a/src/main/java/com/madrapps/jacoco/StringOperation.java b/src/main/java/com/madrapps/jacoco/StringOperation.java
new file mode 100644
index 0000000..df85f61
--- /dev/null
+++ b/src/main/java/com/madrapps/jacoco/StringOperation.java
@@ -0,0 +1,7 @@
+package com.madrapps.jacoco;
+
+public interface StringOperation {
+    boolean endsWith(String source, String chars);
+
+    boolean startsWith(String source, String chars);
+}
diff --git a/src/main/java/com/madrapps/jacoco/operation/StringOp.java b/src/main/java/com/madrapps/jacoco/operation/StringOp.java
index be10d58..86d0730 100644
--- a/src/main/java/com/madrapps/jacoco/operation/StringOp.java
+++ b/src/main/java/com/madrapps/jacoco/operation/StringOp.java
@@ -1,11 +1,15 @@
 package com.madrapps.jacoco.operation;
 
-public class StringOp {
+import com.madrapps.jacoco.StringOperation;
 
+public class StringOp implements StringOperation {
+
+    @Override
     public boolean endsWith(String source, String chars) {
         return source.endsWith(chars);
     }
 
+    @Override
     public boolean startsWith(String source, String chars) {
         return source.startsWith(chars);
     }
diff --git a/src/main/kotlin/com/madrapps/jacoco/Math.kt b/src/main/kotlin/com/madrapps/jacoco/Math.kt
index 9352ca2..e798382 100644
--- a/src/main/kotlin/com/madrapps/jacoco/Math.kt
+++ b/src/main/kotlin/com/madrapps/jacoco/Math.kt
@@ -1,20 +1,20 @@
 package com.madrapps.jacoco
 
-class Arithmetic {
+class Arithmetic : MathOperation {
 
-    fun add(a: Int, b: Int): Int {
+    override fun add(a: Int, b: Int): Int {
         return a + b
     }
 
-    fun subtract(a: Int, b: Int): Int {
+    override fun subtract(a: Int, b: Int): Int {
         return a - b
     }
 
-    fun multiply(a: Int, b: Int): Int {
+    override fun multiply(a: Int, b: Int): Int {
         return a * b
     }
 
-    fun divide(a: Int, b: Int): Int {
+    override fun divide(a: Int, b: Int): Int {
         return a / b
     }
 
diff --git a/src/main/kotlin/com/madrapps/jacoco/MathOperation.kt b/src/main/kotlin/com/madrapps/jacoco/MathOperation.kt
new file mode 100644
index 0000000..dc28882
--- /dev/null
+++ b/src/main/kotlin/com/madrapps/jacoco/MathOperation.kt
@@ -0,0 +1,12 @@
+package com.madrapps.jacoco
+
+interface MathOperation {
+    fun add(a: Int, b: Int): Int
+    fun subtract(a: Int, b: Int): Int
+    fun multiply(a: Int, b: Int): Int
+    fun divide(a: Int, b: Int): Int
+
+    interface MathOp {
+
+    }
+}
\ No newline at end of file