[GitHub] zonghaishang opened a new pull request #1630: [Dubbo- checkstyle not working for jdk7 ] active checkstyle for jdk7.

[GitBox <gi...@apache.org>]

zonghaishang opened a new pull request #1630: [Dubbo- checkstyle not working for jdk7 ] active checkstyle for jdk7.
URL: https://github.com/apache/incubator-dubbo/pull/1630
 
 
   ## What is the purpose of the change
   
   1. active checkstyle for jdk7.
   
   ## Brief changelog
   
   1. pom.xml `<jdk>[1.8,)</jdk ` changed to `<jdk>[1.7,)</jdk`
   
   ## Verifying this change
   
   1. pass ci for this pr.
   
   Follow this checklist to help us incorporate your contribution quickly and easily:
   
   - [] Make sure there is a [GITHUB_issue](https://github.com/apache/incubator-dubbo/issues) filed for the change (usually before you start working on it). Trivial changes like typos do not require a GITHUB issue. Your pull request should address just this issue, without pulling in other changes - one PR resolves one issue.
   - [x] Format the pull request title like `[Dubbo-XXX] Fix UnknownException when host config not exist #XXX`. Each commit in the pull request should have a meaningful subject line and body.
   - [x] Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
   - [ ] Write necessary unit-test to verify your logic correction, more mock a little better when cross module dependency exist. If the new feature or significant change is committed, please remember to add integration-test in [test module](https://github.com/alibaba/dubbo/tree/master/dubbo-test).
   - [ ] Run `mvn clean install -DskipITs` to make sure unit-test pass. Run `mvn clean test-compile failsafe:integration-test`  to make sure integration-test pass.
   - [ ] If this contribution is large, please follow the [Software Donation Guide](https://github.com/apache/incubator-dubbo/wiki/Software-donation-guide).
   

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