[WICKET-6783] Utility classes available in JDK should be deprecated/removed

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 9.0.0, 8.9.0
• Component/s: wicket-core
• Assignee: Maxim Solodovnik
• Reporter: Maxim Solodovnik
• Created: 06/May/20 12:15
• Updated: 15/May/20 08:53
• Resolved: 08/May/20 08:54

Description

ConcurrentHashSet should be deprecated in wicket8 and removed in wicket9

ConcurrentHashSet can be safely removed from wicket codebase due to
since Java8 it is possible to use ConcurrentHashMap.newKeySet()

MicroMap should be deprecated for wicket9 in favor of Map.of(key, value)

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