Examples of org.apache.wink.json4j.JSONObject.opt()

org.apache.wink.json4j.JSONObject.opt()
Method to obtain the object value for a key. If the key is not in the map, null is returned. This string-based method is provided for API compatibility to other JSON models. @param key The key (attribute) name to obtain the value for.

            obj.put("key3", "key3");
            String[] keys = {"key1", "key3"};
            JSONObject testObj = new JSONObject(obj, keys);
            assertTrue(testObj.size() == 2);
            assertTrue(testObj.opt("key2") == null);
            assertTrue(testObj.opt("key3").equals("key3"));
            assertTrue(testObj.opt("key1").equals("key1"));
        }
        catch (JSONException jex) {
            jex.printStackTrace();
            assertTrue(false);

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            String[] keys = {"key1", "key3"};
            JSONObject testObj = new JSONObject(obj, keys);
            assertTrue(testObj.size() == 2);
            assertTrue(testObj.opt("key2") == null);
            assertTrue(testObj.opt("key3").equals("key3"));
            assertTrue(testObj.opt("key1").equals("key1"));
        }
        catch (JSONException jex) {
            jex.printStackTrace();
            assertTrue(false);
        }

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