diff --git a/.devcontainer.json b/.devcontainer.json
new file mode 100644
index 0000000..bfbeb0d
--- /dev/null
+++ b/.devcontainer.json
@@ -0,0 +1,3 @@
+{
+    "image": "mcr.microsoft.com/devcontainers/java:21"
+}
\ No newline at end of file
diff --git a/.vscode/extensions.json b/.vscode/extensions.json
new file mode 100644
index 0000000..add4f4e
--- /dev/null
+++ b/.vscode/extensions.json
@@ -0,0 +1,5 @@
+{
+    "recommendations": [
+        "vscjava.vscode-java-pack"
+    ]
+}
\ No newline at end of file
diff --git a/Exercise.java b/Exercise.java
index 3c092f9..c436bc6 100644
--- a/Exercise.java
+++ b/Exercise.java
@@ -1,6 +1,33 @@
+import java.util.Scanner;
+
 public class Exercise {
 
   public static void main(String[] args) {
-    // implement exercise here
+
+    Scanner scanner = new Scanner(System.in);
+
+    int k;
+    double p;
+
+    boolean loop;
+    do {
+      System.out.print("Gib bitte das Startkapital ein (in Euro): ");
+      k = scanner.nextInt();
+
+      System.out.print("Gib bitte den Prozentsatz ein: ");
+      p = scanner.nextDouble();
+
+      System.out.println(
+          "Ergebnis: Der Jahreszins betraegt " + (int) calculateInterestPerAnnum(k, p) + " Euro");
+
+      System.out.print("Willst Du einen weiteren Jahreszins berechnen (true, false)?: ");
+      loop = scanner.nextBoolean();
+    } while (loop);
+
+    scanner.close();
+  }
+
+  static double calculateInterestPerAnnum(int k, double p) {
+    return k * p / 100;
   }
 }