Ideas for splitting up a string?

Question

I'm making a library that holds media items, such as dvds or video games, and saves a file for the list of the media items. I have to make a method that can read in the data from the save file, recreate the media items, and put them into the list. I was thinking of tokenizing it but I can't figure out how to get it started. Any suggestions? I'm using java. Each media item holds a String title, String format, Boolean borrowed, String name, and String date. This method is going to be used to load the save file upon starting the program.

for reading and writing data a simple text file would be more than enough if it is needed to be read by the user though if you are the one who needs to read the file I suggest looking into xml http://www.w3schools.com/xml/ though that link only shows you what xml is I suggest you do some of the research on implementing it into java. — SemperAmbroscus, Dec 13 '14 at 00:02
Create a bean for the `MediaItem`, then serialize it using `XMLEncoder` as shown in [How to serialize Java 2D Shape objects as XML?](http://stackoverflow.com/q/26579729/418556) — Andrew Thompson, Dec 13 '14 at 00:02
Many choices for saving data from Java: Databases, Java Serialization, writing XML with [Simple library](http://simple.sourceforge.net) or JAXB, equivalents for JSON are popular nowadays, or use the new [Apache Commons CSV](http://commons.apache.org/proper/commons-csv/) library to read/write good old-fashioned [CSV (Comma-Separated Values)](https://www.rfc-editor.org/rfc/rfc4180.txt) or Tab-delimited files. Many options with many pros and cons, so too broad for a question here on StackOverflow. StackOverflow is aimed at specific programming problem-and-answer rather than long discussions. — Basil Bourque, Dec 13 '14 at 03:14
Duplicate (closed as not constructive): http://stackoverflow.com/questions/13647657/what-are-good-methods-for-save-java-application-data — Basil Bourque, Dec 13 '14 at 03:16

score 0 · Answer 1 · answered Dec 13 '14 at 00:52

You can use Serialization to save the data to a file and read it back. You won't be able to read the text though.

public class MediaSave {
    public static class Media implements Serializable{
        /**
         * 
         */
        private static final long serialVersionUID = 7452860232014574705L;
        public String title;
        public String format;
        public Boolean borrowed;
        public String name;
        public Date date;
        protected Media(String title, String format, Boolean borrowed,
                String name, Date date) {
            super();
            this.title = title;
            this.format = format;
            this.borrowed = borrowed;
            this.name = name;
            this.date = date;
        }
        public String toString(){
            return title + " " + format + " " + borrowed + " " + name + " " + " " +  date ;
        }
    }
    public static void main(String[] args) throws IOException, ClassNotFoundException{
        Media[] media = new Media[4];
        media[0] = new Media("Avatar1", "dvd",true, "jon1", new Date());
        media[1] = new Media("Avatar2", "dvd",true, "jon2", new Date());
        media[2] = new Media("Avatar3", "dvd",true, "jon3", new Date());
        media[3] = new Media("Avatar4", "dvd",true, "jon4", new Date());
        Path p = Paths.get("resources/media.txt");
        File f = p.toFile();
        if(!f.exists()){
            f.createNewFile();
        } 


        try(ObjectOutputStream writer = new ObjectOutputStream(new FileOutputStream(f))){
            writer.writeInt(media.length);
            for(Media m : media){
            writer.writeObject(m);
            }
        }
        try(ObjectInputStream reader = new ObjectInputStream(new FileInputStream(f))){  
            int cnt = reader.readInt();
            for(int i =0 ; i != cnt;i++){
                     Media m=(Media)reader.readObject();
                     System.out.println(m.toString());
            }
        }
    }
}

Ideas for splitting up a string?

1 Answers1