What I want to share with you today is about 《〈Java Development Manual （ Taishan Edition ）〉 soul 13 ask 》 Information , Pull down the end of the text to get the link to the network disk
1.《 new edition Java Development Manual 》 What is the problem of null pointer of ternary operators mentioned ？ 
2. Why Alibaba suggests initialization HashMap Capacity size of ？ 
3.Java The development manual suggests creating HashMap Set the initialization capacity , But how much is appropriate ？ 
4. Why is Alibaba banned Executors Creating a thread pool ？ 
5. Why Alibaba requires careful use of ArrayList Medium subList Method ？ 
6. Why Alibaba doesn't suggest for Use in loop “+” String splicing ？ 
7. Why is Alibaba forbidden in foreach It's going on in the cycle remove/add operation ？ 
8. Why does alibaba prohibit engineers from directly using the logging system (Log4j、Logback) Medium API ？ 
9. Why is Alibaba forbidden to put SimpleDateFormat Defined as static Variable ？ 
10. Why Alibaba prohibits developers from using isSuccess As a variable name ？ 
11. Why Alibaba forbids developers to modify serialVersionUID Value of field ？ 
12. Why Alibaba advises developers to use inheritance carefully ？ 
13. Why is Alibaba banned count( Name ) or count( Constant ) To replace count(*) ？ 
Click on the link to get the full document link ：https://pan.baidu.com/s/1Ffw5r8VfwlysoGNY25rQTQ Extraction code ：qm0q
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