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Asked: 2026-06-03T23:44:23+00:00

In java, I need to write a string into a new file, like ‘c:\test\upload\myfile.txt’,

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In java, I need to write a string into a new file, like ‘c:\test\upload\myfile.txt’, if the ‘upload’ folder is not existing, it will automatically create it. how to do it ? Apache Commons IO has this API ?

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1 Answer

  1. Editorial Team
    File file = new File(...);
file.mkdirs(); //for several levels, without the "s" for one level
FileWriter fileWriter = new FileWriter(file);
fileWriter.write("...");

    Creates the directory named by this abstract pathname, including any necessary but nonexistent parent directories. Note that if this operation fails it may have succeeded in creating some of the necessary parent directories.

    Returns:
    true if and only if the directory was created, along with all necessary parent directories; false otherwise

    See File.mkdirs() and File.mkdir()

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