file.getAbsolutePath() and file.length() returning wrong values

Question

I have a method fileUpload() which opens a FileChooser-Menu. If i select there a file then the absolute path and the filesize is written on the console. First i try this only with:

System.out.println(file.getAbsolutePath());  // Print: C:\Users\Anonym XY\Desktop\test.txt\C:\Users\Anonym XY\Desktop\test.txt
System.out.println(file.length());   // Print: "0"

But for the absolute path i get the absolute path but double printed?! Oo And for the filesize i get here 0, which is the false size.

If i wirte this:

 System.out.println(fileChooser.getSelectedFile().length());  // Print: "15747840"

then i get the right filesize.

My whole method:

        public void fileUpload() {
            JFileChooser fileChooser = new JFileChooser();
            if(fileChooser.showOpenDialog(null)==JFileChooser.APPROVE_OPTION) {

                File file = new File(fileChooser.getSelectedFile() ,fileChooser.getSelectedFile().getAbsolutePath());
                System.out.println("Path: " + file.getAbsolutePath());  // Print: "Path: C:\Users\Anonym XY\Desktop\test.txt\C:\Users\Anonym XY\Desktop\test.txt"
                System.out.println("Filesize: " + fileChooser.getSelectedFile().length());  // Print: "Filesize: 15747840"
                System.out.println("Filesize: " + file.length());       // Print: "Filesize: 0"

            }else if(fileChooser.showOpenDialog(null)==JFileChooser.ERROR_OPTION) {
                System.out.println("Error");
            }   

        }

Answer 1

Error is in this line:

File file = new File(fileChooser.getSelectedFile(), fileChooser.getSelectedFile().getAbsolutePath());

what it essentially does: it combines selected-file with itself: as parent and as child, so you get the path "doubled".

the following solves the problem:

File file = fileChooser.getSelectedFile();

Answer 2

I think here the issue is your file creation.

File file = new File(fileChooser.getSelectedFile() ,fileChooser.getSelectedFile().getAbsolutePath());

so instead the above line if you just do

  File file = fileChooser.getSelectedFile() 

Just to point, I have not try this but why to create 2 objects of file? If you are doing this for checking/learning purpose then use

File file = new File(fileChooser.getSelectedFile().getAbsolutePath());

Answer 3

Your problem:

new File(fileChooser.getSelectedFile() ,fileChooser.getSelectedFile().getAbsolutePath());

This creates a new File instance from a parent abstract pathname and a child pathname string.

http://docs.oracle.com/javase/7/docs/api/java/io/File.html#File(java.io.File , java.lang.String)

The new file has size zero and its path is obtained by appending path of 'parent' and 'child' path.

Answer 4

Try this: file chooser returns a file, no need to create new file.

JFileChooser chooser = new JFileChooser();
int showOpenDialog = chooser.showOpenDialog(null);
if (showOpenDialog == JFileChooser.APPROVE_OPTION) {
    File f = chooser.getSelectedFile();
    System.out.println("path: " + f.getAbsolutePath());
    System.out.println("File size: " + f.length());
}