I have a text file that has a list of User IDs looking like this;

798574
890859
984058
484849
etc...

How can I read this text file into Java and then create a single string that wraps each ID in quotes and separates them by a comma like this?

'798574','890859','984058','484849',.....

I tried this, but I feel like it is not efficient at all;

public class SixtyK {   

public String getNumbers() {

    FileInputStream myfile = null;
    BufferedReader reader = null;

    try {
        myfile = new FileInputStream("myfile.txt");
        reader = new BufferedReader(new InputStreamReader(myfile));
        String my_quote = "\\'";
        String my_sep = ",";

        String line = reader.readLine();
        String new_line = "";

        new_line += my_quote;
        new_line += line;
        new_line += my_quote;
        new_line += my_sep;



        while(line != null){

            line = reader.readLine();
            new_line += my_quote;
            new_line += line;
            new_line += my_quote;
            new_line += my_sep;

        }           
        System.out.println(new_line);
        return new_line;
    } catch (FileNotFoundException ex) {
        Logger.getLogger(SixtyK.class.getName()).log(Level.SEVERE, null, ex);
        return "Error";
    } catch (IOException ex) {
        Logger.getLogger(SixtyK.class.getName()).log(Level.SEVERE, null, ex);
        return "Error";

    } finally {
        try {
            reader.close();
            myfile.close();
            return "finally caught";
        } catch (IOException ex) {
            Logger.getLogger(SixtyK.class.getName()).log(Level.SEVERE, null, ex);
            return "error in finally";
        }
    }
}