When developing API according to Real-Time-SDK-2.0.0.L1.java, our client met NullPointerException when trying to print message content to screen in debug mode. Please find below screenshot:
However when print whole message which includes field list, it works. Please find below, the one in red circle are what client trying to extract:
Could you please help:
1. How to detect what was the cause of nullpointer?
2. If there any alternative way to locate and extract certain field from an message?