JSONObject.put字符串方法将额外\字符添加到JSON字符串

I have a json string which has pid, name, price as elements. I'm displaying it in logcat. But this string changes as i use the put method to add a json string to json object. When i print the json object '\' charcater is added to every key value pair. I'm not able to figure out what is actually causing the problem.I have a json string which has pid, name, price