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From "Rob Godfrey (JIRA)" <j...@apache.org>
Subject [jira] [Created] (QPID-6014) [Java] Declare variables as ConcurrentMap not ConcurrentHashMap to avoid issues afetr compiling on Java 8
Date Mon, 18 Aug 2014 18:12:21 GMT
Rob Godfrey created QPID-6014:
---------------------------------

             Summary: [Java] Declare variables as ConcurrentMap not ConcurrentHashMap to avoid
issues afetr compiling on Java 8
                 Key: QPID-6014
                 URL: https://issues.apache.org/jira/browse/QPID-6014
             Project: Qpid
          Issue Type: Improvement
          Components: Java Broker, Java Client, Java Common
            Reporter: Rob Godfrey
            Assignee: Rob Godfrey
             Fix For: 0.31


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



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