Troubleshooting Java DNS Cache NullPointerException in Multi-threaded Environments
Exception Manifestation
2018-03-16 18:53:59,501 ERROR [DefaultMessageListenerContainer-1] (com.bill99.asap.service.CryptoClient.seal(CryptoClient.java:34))- null
java.lang.NullPointerException
at java.net.InetAddress$Cache.put(InetAddress.java:779) ~[?:1.7.0_79]
at java.net.InetAddress.cacheAddresses(InetAddress.java:858) ~[?:1.7.0_79]
...
Posted on Wed, 13 May 2026 14:18:00 +0000 by why not