[LANG-1667] Cannot Use ReflectionToStringBuilder for ArrayList on Java 16 Due to Module Access

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.12.0
• Fix Version/s: 3.13.0
• Component/s: lang.builder.*

Environment

JDK 16

• Assignee: Unassigned
• Reporter: Andrew Thomas
• Created: 12/Aug/21 04:08
• Updated: 01/Sep/21 21:38
• Resolved: 13/Aug/21 14:36

Description

In Java 16, many classes in java.base module are not able to be made accessible due to access restrictions on the module. An example is ArrayList.

 

In ToStringBuilderTest.testReflectionHierarchyArrayList(), the test fails with the following error:

java.lang.reflect.InaccessibleObjectException: Unable to make field private static final java.lang.Object[] java.util.ArrayList.DEFAULTCAPACITY_EMPTY_ELEMENTDATA accessible: module java.base does not "opens java.util" to unnamed module @3339ad8e

 

This is causing build failures for all open PRs.