Obsolete the long term deprecated and aliased Trace flags

Summary

The following trace flags were deprecated in previous releases and should be obsolesced in JDK-16. Users can get the same tracing information that was provided by these flags by using unified logging flags.

Trace flags deprecated in JDK-9:

• TraceExceptions
• TraceClassLoading
• TraceClassLoadingPreorder
• TraceClassUnloading
• TraceClassPaths
• TraceClassResolution
• TraceLoaderConstraints
• TraceSafepointCleanupTime
• TraceBiasedLocking
• TraceMonitorInflation
• TraceRedefineClasses
• TraceJVMTIObjectTagging

Trace flag PrintSharedSpaces was deprecated in JDK-10, PrintJNIResolving in JDK-14, and TraceInvokeDynamic and TraceMethodHandles in JDK-15.

Problem

JVM trace flags that were deprecated in previous releases should be obsolesced in JDK-16.

Solution

By obsoleting these flags, the JVM will no longer translate the flags into their unified logging alternative. Instead, the JVM will ignore these flags.

Specification

The descriptions of the above flags will be moved from the Deprecated Java Options section of the Java man page to the Obsolete Java Options section.