diff --git a/Jenkinsfile b/Jenkinsfile
new file mode 100644
index 0000000..a4ef1e7
--- /dev/null
+++ b/Jenkinsfile
@@ -0,0 +1,21 @@
+pipeline {
+    agent any 
+    stages {
+        stage('Build') {
+            steps {
+                // Download the code
+                checkout scm
+                // Compile the main class
+                sh 'javac -d target -sourcepath src/main/java src/main/java/com/example/math/Calculator.java'
+            }
+        }
+        stage('Test') {
+            steps {
+                // Compile the tests
+                sh 'javac -d target -cp target:junit-platform-console-standalone-1.4.0.jar src/test/java/com/example/math/TestCalculator.java'
+                // Run the tests
+                sh 'java -jar junit-platform-console-standalone-1.4.0.jar --class-path target --scan-class-path --reports-dir=target/surefire-reports/'
+            }
+        }
+    }
+}
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..022fe89
--- /dev/null
+++ b/README.md
@@ -0,0 +1,2 @@
+# ci-jenkins-junit
+Continuous Integration with Jenkins: Repo using JUnit tests
diff --git a/src/main/java/com/example/math/Calculator.java b/src/main/java/com/example/math/Calculator.java
index c0978bb..a3ac843 100644
--- a/src/main/java/com/example/math/Calculator.java
+++ b/src/main/java/com/example/math/Calculator.java
@@ -10,4 +10,8 @@ public int subtract(int a, int b) {
         return a - b;
     }
 
+    public int multiply(int a, int b) {
+        return a * b;
+    }
+
 }
diff --git a/src/test/java/com/example/math/TestCalculator.java b/src/test/java/com/example/math/TestCalculator.java
index 2e06237..8d89862 100644
--- a/src/test/java/com/example/math/TestCalculator.java
+++ b/src/test/java/com/example/math/TestCalculator.java
@@ -17,4 +17,11 @@ public void subtract() {
         assertEquals(2, calculator.subtract(8, 6));
     }
 
+    @Test
+    public void multiply() {
+        Calculator calculator = new Calculator();
+        assertEquals(30, calculator.multiply(5, 6));
+        assertEquals(5, calculator.multiply(5, 1));
+    }
+
 }