JAVA Programming Question WRITE IN JAVA You are burning some music CDs for a par

Question

JAVA Programming Question

WRITE IN JAVA

You are burning some music CDs for a party. You've arranged a list of songs in the order in which you want to play them. However, you would like to maximize your use of space on the CD, which holds 80 minutes of music. So, you want to figure out the total time for a group of songs and see how well they fit. Write and design a java program to help you do this. The data are on the file songs.dat. The time is entered as seconds. For example, if a song takes 6 minutes and 30 seconds to play, the data entered in the data file for that songs would be 390. After all the data has been read, the application should print a message indicating the time remaining on the CD. The output should be in the form of a table with columns and headings written on a file.

Song Number Song Time Total Time

Minutes Seconds Minutes Seconds

__________________________________________

1 5 10 5 10

2 7 42 12 52

5 4 19 17 11

3 4 33 21 44

4 10 27 32 11

5 8 55 41 6

There are 38 minutes and 54 seconds of space left on the 80 minute CD

Explanation / Answer

package assignment;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;

public class CDMusicTime {

   public static void main(String[] theArgs) {
       String inFileName = "D://ravi/Cheg/songs.txt";
       String outFileName = "D://ravi/Cheg/songsReport.txt";
       String outputStr = "Song Number      Song Time          Total Time ";
              outputStr += "              Minutes Seconds     Minutes Seconds ";
              outputStr += "------------------------------------------------------- ";            
      
       try {
           Scanner input = new Scanner(new File(inFileName));
           int songno = 0;
           int timeInsec = 0;
           int totalMin = 0;
           int totalSec = 0;
           int min = 0;
           int sec = 0;
           while(input != null && input.hasNext()) {
               songno = input.nextInt();
               timeInsec = input.nextInt();
               //input.nextLine();
               //convert time to min:sec
               min = timeInsec / 60;
               sec = timeInsec % 60;
               totalMin += min;
               totalSec += sec;
                outputStr += songno+"                "+min+"        "+sec+"        "+totalMin+"      "+totalSec+" ";
           }
          
           int remTime = 80 * 60 - (totalMin* 60+totalSec);
           min = remTime / 60;
           sec = remTime % 60;
           outputStr +=("There are "+min+" minutes and "+sec+" seconds of space left on the 80 minute CD");
           System.out.println(outputStr);
          
           //Write to File
           FileWriter writer = new FileWriter(new File(outFileName));
              // Writes the content to the file
              writer.write(outputStr);
              writer.flush();
              writer.close();
       } catch (FileNotFoundException e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
       } catch (IOException e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
       }
   }
}

---output---

Song Number      Song Time          Total Time
              Minutes Seconds     Minutes Seconds
-------------------------------------------------------
1                5        10        5      10
2                7        42        12      52
3                4        33        16      85
4                10        27        26      112
5                8        55        34      167
There are 43 minutes and 13 seconds of space left on the 80 minute CD

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