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FileTree.md

File metadata and controls

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jd.commons.io.FileTree

FileTree represents a root file and all its descendants, constructed from a java.io.File, java.nio.file.Path or jd.commons.io.FilePath.

If the root does not exist then the FileTree is empty. If the root is a regular file, the tree consists of just that file. If the root is a directory the tree consists of the directory and all its descendants.

Given a FileTree you can

  • stream the tree elements

  • delete all tree elements

  • copy all tree elements to a target destination

  • visit the tree members, allowing for control if to dive into subtrees or apply changes to visited tree members

    FilePath srcDir = ... FilePath targetDir = ... FileTree srcTree = FileTree.of(srcDir); srcTree.copy().to(targetDir); srcTree.delete();

FileTree allows to restrict operations on the tree to

  • exclude the root

  • apply to descendants matching a filter

  • apply to descendants up to a certain depth

  • follow symbolic links

    srcTree.addFileFilter((file,attr) -> file.getName().endsWith(".txt")).copy().to(targetDir); srcTree.setExcludeRoot().delete();