Day53.File类的实例化 -Java常用类、集合、IO#-白红宇

Day53.File类的实例化 -Java常用类、集合、IO#

阅读量：334 次

发布时间：2019-03-04

本文共 1184 字，大约阅读时间需要 3 分钟。

Java File????????Java??????????????????????File????????????????????File???????????

File???java.io???????????????????????????????????File?????????????????????????IO???

1. ??File??

File???????????????

???????File(String filePath)
???????????????????File????????????????????????????????????????????
- Windows???????\\
- Unix????URL??????/

???

File file1 = new File("Hello.txt"); // ????File file2 = new File("D:\\Note\\src\\com\\he.txt"); // ????

????????File(String parentPath, String childPath)
??????????????????????????????????

File file3 = new File("D:\\Note\\src", "com");

????????File(File parent, String childPath)
??????File?????????????????????????

File file4 = new File(file3, "he.txt");

2. ????

???File?????????????

??????????????File????????????????????
?IDEA???????????????Module????????????????????
?Eclipse??????????????????????????????

????????????????D:\????????http://www.example.com????????????????

3. ?????

??????????????????

Windows????????\\
???D:\MyFolder\MyFile.java

Unix???????/
???/home/user/MyFolder/MyFile.java

URL???????????????URL?????????????/

????????Java??File?????????????????????????????????????????????

???????????????????????File??????????Java??????????

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