How to get relative path of picture from BLOB instead of this com.mysql.cj.jdbc.Blob@28763983?

I uploaded a couple of pictures in my database and i want to get their path, but i always get something like this: com.mysql.cj.jdbc.Blob@28763983 for every picture. This is the code:

  public static List<Image> selectImages() {
    ResultSet rs = null;
    try {
        imageList.clear();
        String selectImages = "select * from image";
        PreparedStatement ps = DataBaseConnection.get().prepareStatement(selectImages);
        rs = ps.executeQuery(selectImages);
        while (rs.next()) {
            int idImage = rs.getInt("id");
            Blob viewImage = rs.getBlob("image");
            Image image = new Image(idImage, viewImage);
            imageList.add(image);
        }
        return imageList;

How can i get a real path instead of that gibberish?

That "gibberish" is the default output of Object.toString() from java.lang.
Your code snippet doesn't show it, but I assume you are iterating over that list of Images and printing the Blob; something like this

for (image : selectImages()) {
    System.out.println(image.getViewImage());
}

Taking a quick look at the API docs for the mysql jdbc Blob, there doesn't appear to be any immediately available methods for achieving what you want.
http://www.docjar.com/docs/api/com/mysql/jdbc/Blob.html

It sounds like you want the output of File.getAbsolutePath()

This article demonstrates how to fetch a Blob from the database as a File in the "readBlob" method; https://www.mysqltutorial.org/mysql-jdbc-blob/

Or alternatively, convert the Blob to a File; https://www.baeldung.com/convert-input-stream-to-a-file

File targetFile = new File("src/main/resources/targetFile.tmp");
OutputStream outStream = new FileOutputStream(targetFile);
outStream.write(buffer);

What you may notice about both of these approaches, is that the fileName String is an external variable and is not stored within the Blob itself.

So the moral of the story here is that the Blob object is only stored in memory, it isn't written to a file yet.