Summary

Making the support for "JLine" based Console as "opt-in"

Problem

The enhancement introduced in JDK-8295803 uses JLine library (jdk.internal.le module) as the java.io.Console implementation by default. This resulted in the performance regression as in the problem description.

Solution

Making the support for JLine optional. Only available if the user opts in with -Djdk.console=jdk.internal.le system property.

Specification

N/A. This is the behavioral change only.