JSON :- JavaScript Object Notation It contains key/value pairs Key-> Strings Values:->JSON {} :-> JSON Object [] :-> JSON array Syntax : { "employees" :[ { "firstName" : "John" , "lastName" : "Doe" }, { "firstName" : "Anna" , "lastName" : "Smith" }, { "firstName" : "Peter" , "lastName" : "Jones" } ]} package csdevbin.json; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.TextView; import org.json.JSONObject; public class MainActivity extends AppCompatActivity { public static final String JSON_STRING = "{ \" employee \" :{ \" name \" : \" John \" , \" salary \" :6000}}" ; @Override public void onCreate(Bundle savedInstanceState) { super .onCreat