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iflove/Java代码

Created April 26, 2021 02:48
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iflove commented Apr 26, 2021 •
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1.delete()方法：
当调用delete()方法时，直接删除文件，不管该文件是否存在，一经调用立即执行；

2.deleteOnExit()方法：
当调用deleteOnExit()方法时，只是相当于对deleteOnExit（）作一个声明，当程序运行结束，JVM终止时才真正调用deleteOnExit()方法实现删除操作。即该方法是将删除的命令缓存了一下，到服务停止的时候再进行操作！

3.Weak HashSet：
Collections.newSetFromMap

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