Question

I have a folder with more than 2000 files and I need to index their file names on a database(MySQL) using Java, but how could I do this?

PS: The MySQL connection part I already know.

Answer 1

You can recursively list all the files in a directory like this:

import java.io.*;

public class ListDir {

    public static void main(String args[]) {
        File root;
        if (args.length > 0) root = new File(args[0]);
        else root = new File(System.getProperty("user.dir"));
        ls(root); 
    }

    private static void ls(File f) { 
        File[] list = f.listFiles();
        for (File file : list) {
            if (file.isDirectory()) ls(file);
            else System.out.println(file);
        }
    }
}

See also Using Prepared Statements. Maybe something like this:

PreparedStatement ps = conn.prepareStatement("INSERT INTO Files VALUES(?)");
File userDir = new File(System.getProperty("user.dir"));
File[] files = userDir.listFiles();
for (File f : files) {
    if (f.isFile()) {
        ps.setString(1, f.getAbsolutePath());
        ps.executeUpdate();
    }
}