[Berkeley CS61B] Thoughts from Discussion 2 & HW1

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1. 打开、使用任何外部文件,都需要注意路径是否正确,是否在当前文件夹下

2. 使用Java标准库时要仔细阅读documentation,注意所有参数的类型是否匹配正确

Screen Shot 2015-06-11 at 3.31.59 PM

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