Code Structure 代码结构
命名保持规范，驼峰命名。
Boolean方法，起名要以"is" / "has"开头。
方法名称要是动词。
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Design Principles 设计原则
Apply the Single-Responsibility principle to increase cohesion
Apply the Open-Closed principle for extensible design
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Structural Complexity 结构复杂度
Cyclomatic Complexity should not exceed 10
- Methods should not be too complex
- Classes should not have too many methods
Depth of Inheritance Tree should not exceed 5
Lines of code per function should not exceed 100
Parameters per function should not exceed 7
Error Handling 错误处理
Throwable.printStackTrace(...) should not be called
Exceptions should not be thrown in finally blocks
Don't swallow exceptions without commenting why
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Logging 日志
Do not log Sensitive / Confidential data (such as passwords)
Log all authentication success and failures
Unit Testing 测试用例
Write unit tests for all new code/projects, and for all bug fixes (including legacy code)
Each function should have unit tests that cover normal conditions, edge conditions and error handling
Use Mock objects in Unit Tests
Information Security 信息安全
Use strong authentification process
All forms of user input should be validated and sanitized