diff --git a/newbiecontest/prog/jazz/Prog12.java b/newbiecontest/prog/jazz/Prog12.java
new file mode 100644
index 0000000..6d50ffb
--- /dev/null
+++ b/newbiecontest/prog/jazz/Prog12.java
@@ -0,0 +1,15 @@
+public class Prog12 {
+    public static void main(String[] args) {
+        int i = 0;
+        for (int k = 0; k <= 128 ; k++) {
+            i = k*k + 17;
+        }
+        System.out.println(" i : " + i);
+        String str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+        StringBuffer buffer = new StringBuffer();
+        for (int k = 0;k<str.length()/3;k++) {
+            buffer.append(str.substring(k+2,k+3));
+        }
+        System.out.println("Resultat : " + buffer.length());
+    }
+}