OpenJDK 19 GA is scheduled for 2022/09/20.
So we should add support for that with PMD version 6.49.0 or earlier.

The following JEPs are important for us:

• JEP 405: Record Patterns (Preview)
  • destructuring of record components with instanceof
• JEP 427: Pattern Matching for switch (Third Preview)
  • new keyword when...

In summary: https://javaalmanac.io/jdk/19/

This issue is similar to the previous: #3809

EA Release of JDK19 is available here: http://jdk.java.net/19/

Tasks:

• Add new java language versions 19 and 19-preview.
  • 19 is the new default
  • update also java.md and ant.md
  • and add in KotlinTestingDsl.kt.
• Update asm dependency:
  • https://search.maven.org/artifact/org.ow2.asm/asm
  • https://asm.ow2.io/versions.html
  • Update net.sourceforge.pmd.lang.java.typeresolution.visitors.PMDASMVisitor.ASM_API if necessary
• Update implementation for "Pattern Matching for switch" (406, 420, 427) as a preview feature, mark AST classes as experimental, if needed.
  • https://openjdk.java.net/jeps/406 (preview 1)
  • https://openjdk.java.net/jeps/420 (preview 2)
  • https://openjdk.java.net/jeps/427 (preview 3)
  • http://cr.openjdk.java.net/~gbierman/jep427%2b405/jep427+405-20220517/specs/patterns-switch-record-patterns-jls.html
• Implement "Record Patterns" (405) as a preview feature, mark AST classes as experimental, if needed.
  • https://openjdk.java.net/jeps/405
  • http://cr.openjdk.java.net/~gbierman/jep427%2b405/jep427+405-20220517/specs/patterns-switch-record-patterns-jls.html
• Remove java language version 17-preview
  • update also java.md and ant.md
  • update KotlinTestingDsl.kt
  • remove exclusions in pmd-core/src/main/resources/internal/all-java.xml
• Write release notes
  • deprecated classes: ASTGuardedPattern
  • new experimental: ASTGuard, ASTRecordPattern, ASTRecordStructurePattern
• Prepare merge for PMD 7 as a new PR: [java] Support Java 19 (pmd7) #4039