[ROCKETMQ-215] Use java 7 syntax to refator code base

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: rocketmq-broker, rocketmq-namesrv, rocketmq-store
• Assignee: Xinyu Zhou
• Reporter: Jaskey Lam
• Created: 06/Jun/17 07:32
• Updated: 20/Sep/17 04:40

Description

code base may have some code like

    private ConcurrentMap<String/* topic@group */, ConcurrentMap<Integer, Long>> offsetTable =
        new ConcurrentHashMap<String, ConcurrentMap<Integer, Long>>(512);

Atucally, with java7, it can be simplied to

    private ConcurrentMap<String/* topic@group */, ConcurrentMap<Integer, Long>> offsetTable =
        new ConcurrentHashMap<>(512);

Which is cleaner.

Since rocketmq broker require jdk which is greater or higher than java7, this can be improved.

But rocketmq client should still remains compatible with jdk 1.6

Issue Links

• links to: GitHub Pull Request #117