JEP 519: Compact Object Headers

JEP 519: Compact Object Headersopenjdk.org

Marked JEP 450 : Compact Object Headers i as official.

java \
  -XX:+UseCompactObjectHeaders \
  -cp "target/classes:target/dependency/*" \
  com.wlodar.jeeps.jep450CompactHeaders.CompactHeadersDemo

 -XX:+UnlockExperimentalVMOptions  no longer needed