How to escape double quotes in JSON using Java

How to escape double quotes in JSON using Java

What is the best way to handle double quotes that exist inside a JSON
String ? I get the string from an external source. Escaping the double
quotes would escape all the double quotes, even the ones that wrap around
the key and the value. I would ideally just want a way to escape the
quotes inside the value. In the example below, the string "quotes" breaks
the JSON. What would be the best way to handle this ? Appreciate your
input. Thanks!
@Test
public void isValidJSON()
{
String testJSONString = "{\"messageType\":\"typeA\",
\"subject\":\"Here is a subject with \"quotes\" in it\" }";
try
{
new JSONObject(testJSONString);
} catch (JSONException e)
{
e.printStackTrace();
}
}
The error I get is:
org.json.JSONException: Expected a ',' or '}' at 60 [character 61 line 1]