[QPID-6014] [Java] Declare variables as ConcurrentMap not ConcurrentHashMap to avoid issues afetr compiling on Java 8

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.30
• Component/s: Broker-J, Java Common, JMS AMQP 0-x
• Assignee: Andrew MacBean
• Reporter: Robert Godfrey
• Created: 18/Aug/14 18:11
• Updated: 25/Feb/15 13:43
• Resolved: 19/Aug/14 10:04

Description

Java 8 redefines the method keySet() on ConcurrentHashMap to return a narrower type than the standard return type given in the Map interface. If the code is compiled in Java 8 and then run under Java 7 this causes linking issues.

Avoid these issues by always declaring variables in terms of the interface ConcurrentMap

Issue Links

• is cloned by: QPID-6412 Declare variables as ConcurrentMap not ConcurrentHashMap to avoid issues after compiling on Java 8