Java - Arrays and Method Parameters

Question

How can I pass an array of filenames into the following method:

public static double getFitness(int x, int y, int r, BufferedImage image);

I currently have a method which creates an array of filenames from a given directory:

//Default image directory (to convert to greyscale).
static File dir = new File("images");
//Array of original image filenames.
static File imgList[] = dir.listFiles();

public static void processGreyscale(){
    if(dir.isDirectory()){
        for(File img : imgList){
            if(img.isFile()){
                //functions are carried out here.
            }
            else{
                                    //functions are carried out here.
            }
        }
    }
}

The getFitness method scores the fitness of an image (...BufferedImage image);) based on the main region of interest (ROI).

What I am looking for is a way to run the getFitness method on the array of filenames; something like this:

public static double getFitness(int x, int y, int r, fileArray)

Can this be done?

UPDATE:

Thank you all for your great suggestions; however, I should mention that I wish to leave the method parameters the same/unchanged as the fitness function is affected (negatively) if I change the passed parameters.

Is there any way that I can run the fitness function on all files/filenames within imgList[]?

What I'm hoping for is this:

public static double getFitness(int x, int y, int r, BufferedImage image){
    use filenames stored in imgList[] to take place of 'image'
    getFitness of `image`
    next image name
}

Is this possible?

You can create a new method with the same name, as long as the parameters are different. See docs.oracle.com/javase/tutorial/java/javaOO/methods.html Overloading Methods. — Patrick
– Patrick, Commented Feb 28, 2012 at 23:17

Petar Minchev · Accepted Answer · 2012-02-28 20:40:00Z

3

Yes, it is possible.

This is the method signature:

public static double getFitness(int x, int y, int r, File[] fileArray)

And this is the calling code:

getFitness(1, 1, 1, imgList);

answered Feb 28, 2012 at 20:40

Petar Minchev

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Comments

Richard J. Ross III · Accepted Answer · 2012-02-28 20:39:24Z

1

Just pass the array?

public static double getFitness(int x, int y, int r, File[] files);

answered Feb 28, 2012 at 20:39

Richard J. Ross III

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Eugene Kuleshov · Accepted Answer · 2012-02-28 20:39:46Z

0

You can specify parameter type as File[] fileArray

answered Feb 28, 2012 at 20:39

Eugene Kuleshov

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javaCity · Accepted Answer · 2012-02-28 20:43:53Z

0

You can do File fileArray[] = new File[numberOfFiles]; then specify a counter to store in the array such as counter = 0 and increment the value of counter each time fileName is added to the array fileArray[counter] = img.getName(); counter++;

then send the array in your desired method public static double getFitness(x, y, r, fileArray);

answered Feb 28, 2012 at 20:43

javaCity

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