The output of lsof (revision: 4.87) on centos 7.8.2003 shows:
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
java 30858 xxxx 841u sock 0,7 0t0 561359758 protocol: TCPv6
java 30858 xxxx 876u sock 0,7 0t0 561093427 protocol: TCPv6
How do I learn more about those sockets?