bug fix

python/tools/garble/java_garble.py

@@ -127,7 +127,7 @@ class JavaGarble:
         for i in range(0, random.randint(0, vars_size)):
             var = self.__variables[random.randint(0, vars_size)]
             content += "%s + " % var.split(" ")[2]
-        content = "System.out.println(len(%s+\"\"));" % content
+        content = "System.out.println((%s\"\").length());" % content
 
         code = code.replace("${content}", content)
         return code