How do you return a JSON object from a Java Servlet

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Write the JSON object to the response object’s output stream.

You should also set the content type as follows, which will specify what you are returning: 

response.setContentType("application/json");
// Get the printwriter object from response to write the required json object to the output stream      
PrintWriter out = response.getWriter();
// Assuming your json object is **jsonObject**, perform the following, it will return your json object  
out.print(jsonObject);
out.flush();

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