Minor formatting updates.

[lastomato]

• Chain constructors instead of assigning directly;
• Typo fixes.

The changes in this PR were from an internal code review.

R: @pabloem
cc @jaketf

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Post-Commit Tests Status (on master branch)

Lang	SDK	Apex	Dataflow	Flink	Gearpump	Samza	Spark
Go		---	---		---	---
Java
Python		---			---	---
XLang	---	---	---		---	---

Pre-Commit Tests Status (on master branch)

---	Java	Python	Go	Website
Non-portable
Portable	---		---	---

See .test-infra/jenkins/README for trigger phrase, status and link of all Jenkins jobs.

[lastomato]

I am not entirely sure if I need to create a JIRA issue for such a trivial change.

[pabloem]

retest this please

[pabloem]

Run Java PreCommit