Why simple string comparison giving FALSE result? [duplicate]

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• How do I compare strings in Java? 23 answers

I cast an object into a JSONObject then get the string and compare it with "play_audio." The IF statement gives a false result even though my log is giving me correct string - what is going on?

                JSONObject data = (JSONObject)args[0];
                String command = null;
                try {
                    command = data.getString("command");
                } catch (JSONException e) {
                    e.printStackTrace();
                }
                Log.i(TAG, "<<<<---- RECEIVING COMMAND ----->>> " + command);
                if (command == "ping_audio") { //WHY IS THIS FALSE?
                    Log.i(TAG, "<<<<---- PLAYING AUDIO ----->>> ");
                }

logcat

<<<<---- RECEIVING COMMAND ----->>> ping_audio