diff --git a/src/DN04.java b/src/DN04.java
new file mode 100644
index 0000000..a566d74
--- /dev/null
+++ b/src/DN04.java
@@ -0,0 +1,8 @@
+public class DN04 {
+    public static void main(String[] args) {
+        for (int i = 0; i < args[0].length(); i += 8) {
+            System.out.print((char) Integer.parseInt(args[0].substring(i, i + 8), 2));
+        }
+        System.out.println();
+    }
+}