Java 文件对象的 renameTo 方法删除我的文件而不是重命名它。 威达仕64

Question

Trying to take one mp3 file and rename it using a string variable. For example, I have a classical music folder, C:/classical, and I want a song called vivaldi renamed to FourSeasons. I want to find the absolute path of the initial file, C:/classical/vivaldi.mp3, then provide a string, "FourSeasons.mp3", and have the file C:/classical/vivaldi.mp3 changed to C:/classical/FourSeasons.mp3.

I've thought of using renameTo and file writer, but neither of these have given me desired results. RenameTo code: this returns false (rename failed), and tends to permanently delete my file.

public static void main(String[] args) {
File mp3 = new File("C:/mp3.mp3");
boolean renamestatus = mp3.renameTo(new File("song.mp3"));
System.out.println(renamestatus);
}

I've also tried to use FileReader and FileWriter to make an exact copy of the file, with a new name. This method outputs an mp3 file that skips and is nowhere near sounding like the input file This is my fileWriter code:

File inputFile = new File("C:/mp3.mp3");
File outputFile = new File("C:/song.mp3");
FileReader in = new FileReader(inputFile);
FileWriter out = new FileWriter(outputFile);
int c;
while ((c = in.read()) != -1)
  out.write(c);
in.close();
out.close();

Answer 1

I also faced same problem,

I solved it using Absolute path of the new file object.

So in your case:

boolean renamestatus = mp3.renameTo(new File("song.mp3"));

should be

boolean renamestatus = mp3.renameTo(new File("C://song.mp3"));

Secondly, without using Absolute path, your file doesn't get deleted, but it is moved to your project's root folder with new name.

Answer 2

When using renameTo you need to specify the path that you want the file to go to.For example with the one you are using the original path is "C:/mp3.mp3" you would want the path in renameTo to look like "C:/song.mp3". So your line would look something like this.

boolean renamestatus = mp3.renameTo(new File("C:/song.mp3"));

Hope that is helpful for you.

Answer 3

Try like this:

mp3.renameTo(new File("C:/song.mp3"));

You can also have a look at this and this answers.

Answer 4

FileReader and FileWriter are made to handle textual data only .

Your MP3 files are binary data and should be treated as such, so you'd need to use FileInputStream and FileOutputStream for reading/writing.

Answer 5

Its not deleting original, Its working fine, Just give complete path(Source file path + new name)