diff --git a/src/main/java/com/thealgorithms/bitmanipulation/CountSetBits.java b/src/main/java/com/thealgorithms/bitmanipulation/CountSetBits.java
new file mode 100644
index 000000000000..2593df013092
--- /dev/null
+++ b/src/main/java/com/thealgorithms/bitmanipulation/CountSetBits.java
@@ -0,0 +1,15 @@
+// CountSetBits.java
+package com.thealgorithms.bitmanipulation;
+
+public final class CountSetBits {
+    private CountSetBits() {
+    }
+    public static int countSetBits(int n) {
+        int count = 0;
+        while (n > 0) {
+            count += n & 1;
+            n >>= 1;
+        }
+        return count;
+    }
+}
diff --git a/src/test/java/com/thealgorithms/bitmanipulation/CountSetBitsTest.java b/src/test/java/com/thealgorithms/bitmanipulation/CountSetBitsTest.java
new file mode 100644
index 000000000000..50e74b7dfd7f
--- /dev/null
+++ b/src/test/java/com/thealgorithms/bitmanipulation/CountSetBitsTest.java
@@ -0,0 +1,17 @@
+// CountSetBitsTest.java
+package com.thealgorithms.bitmanipulation;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+public class CountSetBitsTest {
+    @Test
+    void testCountSetBits() {
+        assertEquals(0, CountSetBits.countSetBits(0));
+        assertEquals(1, CountSetBits.countSetBits(1));
+        assertEquals(2, CountSetBits.countSetBits(5));
+        assertEquals(3, CountSetBits.countSetBits(7));
+        assertEquals(4, CountSetBits.countSetBits(15));
+    }
+}