Question

Implement a Java application for the following:

We want to keep track of a Movie Collection. Each Movie in the collection will contain: Title, Genre, Year (4 digits) and Runtime (double - ex. 2.1 (hrs)). Your program will read movies from a local text file named movies.txt in the current project directory in Eclipse. Each line in the text file contains one Movie with the fields separated by commas.

Read the text file and load the movies in to a Collection. Implement a Comparator for the Movie Class that can sort the movies in ascending order of Title+year. Sort the movies read from the text file (movies.txt) in ascending order of Title+Year and write the sorted collection to a file called sortedmovies.txt in the same directory as movies.txt.

Answer 1

//Java Code

import java.util.Comparator;
import java.util.function.Function;

public class Movie{
    private String title;
    private String genre;
    private int year;
    private double runTime;
    //Default Constructor
    public Movie()
    {
        title="";
        genre="";
        year =0;
        runTime=0;
    }
    //Overload Constructor

    public Movie(String title, String genre, int year, double runTime) {
        this.title = title;
        this.genre = genre;
        this.year = year;
        this.runTime = runTime;
    }
    //getters and setters

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getGenre() {
        return genre;
    }

    public void setGenre(String genre) {
        this.genre = genre;
    }

    public int getYear() {
        return year;
    }

    public void setYear(int year) {
        this.year = year;
    }

    public double getRunTime() {
        return runTime;
    }

    public void setRunTime(double runTime) {
        this.runTime = runTime;
    }
    public void displayMovie()
    {
        System.out.println("Movie's Description:\nTitle: "+title+"\n" +
                "Genre: "+genre+"\nYear: "+year+"\nRuntime: "+runTime);
    }
    //=====================================
    @Override
    public String toString() {
        return title+", "+genre+", "+year+", "+runTime;
    }


    public static Comparator<Movie> MovieComparator = new Comparator<Movie>() {
        @Override
        public int compare(Movie o1, Movie o2) {
            int c1 = o1.title.compareToIgnoreCase(o2.title);
            if(c1==0)
            {
                return o1.year-o2.year;
            }
            else
                return c1;
        }
    };

}

//==========================================

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.*;

public class MovieTracker {
    public static void main(String[] args)
    {
        ArrayList<Movie>movies = new ArrayList<>();
        try {
            Scanner scanFile = new Scanner(new File("movies.txt"));
            PrintWriter writer= new PrintWriter(new File("sortedmovies.txt")) ;
            //read data nad store it into collection
            while (scanFile.hasNext())
            {
                String line = scanFile.nextLine();
                String[] tokens = line.split(", ");
              movies.add(new Movie(tokens[0],tokens[1], Integer.parseInt(tokens[2]),Double.parseDouble(tokens[3])));
            }
            //sort the data
            Collections.sort(movies, Movie.MovieComparator);

            //print data to console and file
            for (Movie m:movies
                 ) {
                m.displayMovie();
                writer.println(m);
            }
            writer.close();
            scanFile.close();
        }
        catch (FileNotFoundException e)
        {
            System.err.println("File not Found....");
        }

    }
}

//Files

//Output

//If you need any help regarding this solution ........ please leave a comment...... thanks