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How to scan a file in a different directory in java?
原标题:

How do you scan a file with java that isn t in the directory the java file is in?

For example: The java file is located at "C:FilesJavaFiles est.java" However, the file I want to scan is located at "C:DataDataPacket99data.txt"

Note: I ve already tried putting another java file in the "C:Data" directory and using the test.java file as a class, but it doesn t work. It still tries to scan from the "C:FilesJavaFiles" Directory.

最佳回答

By using an absolute path instead of a relative.

File file = new File("C:\Data\DataPacket99\data.txt");

Then you can write code that accesses that file object, using a InputStream or similar.

问题回答

You need to use absolute paths in java.io stuff. Thus not new File("data.txt"), but new File("C:/Data/DataPacket99/data.txt"). Otherwise it will be relative to the current working directory which may not per-se be the same in all environments or the one you d expect.

You should be using an absolute path instead of a relative path.

You could use File file = new File("C:/Data/DataPacket99/data.txt"); but it might make your life easier in the future to use a file chooser dialog if at any point the user will have to enter a file path.

I would try this:

File file = new File("../../Data/DataPacket99/data.txt");




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