diff --git a/src/main/java/org/example/C01_10_MultiplicationOfIntegers.java b/src/main/java/org/example/C01_10_MultiplicationOfIntegers.java
deleted file mode 100644
index d8aaed5..0000000
--- a/src/main/java/org/example/C01_10_MultiplicationOfIntegers.java
+++ /dev/null
@@ -1,7 +0,0 @@
-package org.example;
-public class C01_10_MultiplicationOfIntegers {
-    public static int multiply(int num1, int num2) {
-        int multiplication = num1 * num2;
-        return multiplication;
-    }
-}
diff --git a/src/main/java/org/example/P21_StringIntoInteger.java b/src/main/java/org/example/P21_StringIntoInteger.java
index adc773b..0920e56 100644
--- a/src/main/java/org/example/P21_StringIntoInteger.java
+++ b/src/main/java/org/example/P21_StringIntoInteger.java
@@ -1,10 +1,10 @@
 package org.example;
 
 public class P21_StringIntoInteger {
-    public static void main(String[] args) {
-        String text = "1234";
-        int numar = Integer.valueOf(text);
 
-        System.out.println("The value of the integer is : " + numar);
+
+    public static int stringToInteger(String text) {
+        int number = Integer.valueOf(text);
+        return number;
     }
 }
diff --git a/src/test/java/org/example/C01_10_MultiplicationOfIntegersTest.java b/src/test/java/org/example/C01_10_MultiplicationOfIntegersTest.java
deleted file mode 100644
index c27963d..0000000
--- a/src/test/java/org/example/C01_10_MultiplicationOfIntegersTest.java
+++ /dev/null
@@ -1,22 +0,0 @@
-package org.example;
-
-import org.junit.jupiter.api.Test;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-
-public class C01_10_MultiplicationOfIntegersTest {
-
-    @Test
-    public void multiply() {
-        //given input
-        int num1 = 5;
-        int num2 = 6;
-
-        //method call
-        int multiplication = C01_10_MultiplicationOfIntegers.multiply(num1, num2);
-
-
-        //assert the result
-        assertEquals(30, multiplication);
-    }
-}
diff --git a/src/test/java/org/example/P21_StringIntoIntegerTest.java b/src/test/java/org/example/P21_StringIntoIntegerTest.java
new file mode 100644
index 0000000..ef28383
--- /dev/null
+++ b/src/test/java/org/example/P21_StringIntoIntegerTest.java
@@ -0,0 +1,15 @@
+package org.example;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class P21_StringIntoIntegerTest {
+    @Test
+    void getNumber() {
+        String number = "1234";
+        int text = P21_StringIntoInteger.stringToInteger(number);
+        assertEquals(1234, text);
+
+    }
+}
\ No newline at end of file