When Unified Logging was added in Java 9, a number of tracing flags were deprecated and mapped to their unified logging equivalent. These flags are now obsolete and will no longer be converted automatically to enable unified logging. To continue getting the same logging output, you must explicitly replace the use of these flags with their unified logging equivalent.

| Obsoleted Option | Unified Logging Replacement |
| ------------------------ | --------------------------- |
| -XX:+TraceClassLoading | -Xlog:class+load=info |
| -XX:+TraceClassUnloading | -Xlog:class+unload=info |
| -XX:+TraceExceptions | -Xlog:exceptions=info |