How do I move a file from one location to another in Java?

问题

How do you move a file from one location to another? When I run my program any file created in that location automatically moves to the specified location. How do I know which file is moved?

回答1:

myFile.renameTo(new File("/the/new/place/newName.file"));

File#renameTo does that (it can not only rename, but also move between directories, at least on the same file system).

Renames the file denoted by this abstract pathname.

Many aspects of the behavior of this method are inherently platform-dependent: The rename operation might not be able to move a file from one filesystem to another, it might not be atomic, and it might not succeed if a file with the destination abstract pathname already exists. The return value should always be checked to make sure that the rename operation was successful.

If you need a more comprehensive solution (such as wanting to move the file between disks), look at Apache Commons FileUtils#moveFile

回答2:

With Java 7 or newer you can use Files.move(from, to, CopyOption... options).

E.g.

Files.move(Paths.get("/foo.txt"), Paths.get("bar.txt"), StandardCopyOption.REPLACE_EXISTING);

See the Files documentation for more details

回答3:

To move a file you could also use Jakarta Commons IOs FileUtils.moveFile

On error it throws an IOException, so when no exception is thrown you know that that the file was moved.

回答4:

File.renameTo from Java IO can be used to move a file in Java. Also see this SO question.

回答5:

Just add the source and destination folder paths.

It will move all the files and folder from source folder to destination folder.

    File destinationFolder = new File("");
    File sourceFolder = new File("");

    if (!destinationFolder.exists())
    {
        destinationFolder.mkdirs();
    }

    // Check weather source exists and it is folder.
    if (sourceFolder.exists() && sourceFolder.isDirectory())
    {
        // Get list of the files and iterate over them
        File[] listOfFiles = sourceFolder.listFiles();

        if (listOfFiles != null)
        {
            for (File child : listOfFiles )
            {
                // Move files to destination folder
                child.renameTo(new File(destinationFolder + "\\" + child.getName()));
            }

            // Add if you want to delete the source folder 
            sourceFolder.delete();
        }
    }
    else
    {
        System.out.println(sourceFolder + "  Folder does not exists");
    }

回答6:

Java 6

public boolean moveFile(String sourcePath, String targetPath) {

    File fileToMove = new File(sourcePath);

    return fileToMove.renameTo(new File(targetPath));
}

Java 7 (Using NIO)

public boolean moveFile(String sourcePath, String targetPath) {

    boolean fileMoved = true;

    try {

        Files.move(Paths.get(sourcePath), Paths.get(targetPath), StandardCopyOption.REPLACE_EXISTING);

    } catch (Exception e) {

        fileMoved = false;
        e.printStackTrace();
    }

    return fileMoved;
}

回答7:

You could execute an external tool for that task (like copy in windows environments) but, to keep the code portable, the general approach is to:

read the source file into memory
write the content to a file at the new location
delete the source file

File#renameTo will work as long as source and target location are on the same volume. Personally I'd avoid using it to move files to different folders.

回答8:

Try this :-

  boolean success = file.renameTo(new File(Destdir, file.getName()));

回答9:

Files.move(source, target, REPLACE_EXISTING);

You can use the Files object

Read more about Files

回答10:

Wrote this method to do this very thing on my own project only with the replace file if existing logic in it.

// we use the older file i/o operations for this rather than the newer jdk7+ Files.move() operation
private boolean moveFileToDirectory(File sourceFile, String targetPath) {
    File tDir = new File(targetPath);
    if (tDir.exists()) {
        String newFilePath = targetPath+File.separator+sourceFile.getName();
        File movedFile = new File(newFilePath);
        if (movedFile.exists())
            movedFile.delete();
        return sourceFile.renameTo(new File(newFilePath));
    } else {
        LOG.warn("unable to move file "+sourceFile.getName()+" to directory "+targetPath+" -> target directory does not exist");
        return false;
    }       
}

来源：https://stackoverflow.com/questions/4645242/how-do-i-move-a-file-from-one-location-to-another-in-java

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