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About "Java Development Manual (Taishan version)" soul 13 questions (with internet disk link)

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 ? file

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2. Why Alibaba suggests initialization HashMap Capacity size of ? file

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3.Java The development manual suggests creating HashMap Set the initialization capacity , But how much is appropriate ? file

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4. Why is Alibaba banned Executors Creating a thread pool ? file

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5. Why Alibaba requires careful use of ArrayList Medium subList Method ? file

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6. Why Alibaba doesn't suggest for Use in loop “+” String splicing ? file

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7. Why is Alibaba forbidden in foreach It's going on in the cycle remove/add operation ? file

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8. Why does alibaba prohibit engineers from directly using the logging system (Log4j、Logback) Medium API ? file

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9. Why is Alibaba forbidden to put SimpleDateFormat Defined as static Variable ? file

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10. Why Alibaba prohibits developers from using isSuccess As a variable name ? file

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11. Why Alibaba forbids developers to modify serialVersionUID Value of field ? file

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12. Why Alibaba advises developers to use inheritance carefully ? file

13. Why is Alibaba banned count( Name ) or count( Constant ) To replace count(*) ? file

Click on the link to get the full document link :https://pan.baidu.com/s/1Ffw5r8VfwlysoGNY25rQTQ Extraction code :qm0q

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