diff --git a/programmers/내적/solution.java b/programmers/내적/solution.java
new file mode 100644
index 0000000..2c1e6d2
--- /dev/null
+++ b/programmers/내적/solution.java
@@ -0,0 +1,10 @@
+// [문제 링크]: https://school.programmers.co.kr/learn/courses/30/lessons/70128
+
+class Solution {
+    public int solution(int[] a, int[] b) {
+        int answer = 0;
+        for(int c = 0; c < a.length; c++)
+        answer += a[c]*b[c];
+        return answer;
+    }
+}
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