diff --git a/libs/host/list.java b/libs/host/list.java
new file mode 100644
index 0000000..30546e3
--- /dev/null
+++ b/libs/host/list.java
@@ -0,0 +1,35 @@
+import java.io.*;
+
+public class list {
+    private static char nibble(int c) {
+        return (char)(c < 10 ? ('0' + c) : ('a' + (c-10)));
+    }
+    public static void main(String[] argv)
+    {
+        ByteArrayOutputStream stream = new ByteArrayOutputStream(100);
+        OutputStreamWriter writer = null;
+        try {
+            writer = new OutputStreamWriter(stream, "utf-8");
+        } catch (UnsupportedEncodingException e) {
+            e.printStackTrace(System.err);
+        }
+
+        int n = Integer.parseInt(argv[1], 16);
+        try {
+            writer.write(n);
+            writer.close();
+        } catch (IOException e) {
+            e.printStackTrace(System.err);
+        }
+
+        byte[] array = stream.toByteArray();
+
+        System.out.print("        case '" + argv[0] + "':   return \"");
+        for (int i=0; i<array.length; i++) {
+            int b = array[i];
+            System.out.print("\\x" + nibble((b >> 4) & 0x0f) + nibble(b & 0xf));
+        }
+        System.out.println("\";");
+    }
+}
+