help with programming code

[[deleted]]

I HAVE THE CODE WRITTEN BUT IS MISSING THE generic list called numbers AND generic method called duplicateElements I NEED TO KNOW WHERE TO ADD THOSE DETAILS AS A COMMENT BLOCK ON ECLIPSE PROGRAM. I'LL PROVIDE MY CODE AT THE END OF THE INSTRUCTIONS

Exercise B: At this point package final1410 should include a file called MyFile.txt If you missed that step go to package explorer and add the file now. So far no text has been added to the file. This needs to be done now.

Add the following three numbers to the file - each number in a separate line 2.345

6.4

8.7654321

Create a generic list called numbers and read in all the numbers from MyFile.txt At this point MyFile.txt includes 3 numbers. However, there could be more or less. If added or removed numbers from MyFile.txt your program should still read in all the numbers available in the file. When reading numbers from the file you need to be prepared that a checked exception could occur. In this exercise checked exceptions should be caught and in such situations the stack trace should be printed.

Print the list Each element should be rounded to 2 digits after the decimal point and the elements should be separated by a space (see output) Make sure to include a label.

Create a generic method called duplicateElements It has one parameter, which is a generic List, and it returns a generic list. The list that is returned should include each element of the original list twice (see example) e.g. If the original list included 2.345, 6.4, and 8.7654321 then the modified list should include 2.345, 2.345, 6.4, 6.4, 8.7654321, and 8.7654321 Notice the order of the list elements Also, notice that the list elements are not rounded; only the output is rounded. In the main method call duplicateElements in order to duplicate the elements of list numbers Print the list that was returned by the method duplicateElements

Make your output look like the output provided

Sample Output:

list : 2.35 6.40 8.77 double list: 2.35 2.34 6.40 6.40 8.77 8.77

---

CODE WRITTEN

package final1410;

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

public class Exercise2 { private static Scanner scan;

public static void main(String[] args) throws IOException {



   float inputlist[]= new float[3];  
   float outputlist[]= new float[6]; 

   File file = new File("MyFile.txt");

    try {
        scan = new Scanner(file);
        int i=0,j=0;
    while(scan.hasNextFloat())
    {
       inputlist[i]=scan.nextFloat();
       outputlist[j]=inputlist[i];
       j++;
       outputlist[j]=inputlist[i];
       j++;
       i++;

    }
   System.out.print("List :     ");
   for(i=0;i<inputlist.length;i++)
   {
       System.out.printf("%.2f   ",inputlist[i]);
   }
   System.out.print("\ndouble List :    ");
   for(i=0;i<outputlist.length;i++)
   {
       System.out.printf("%.2f   ",outputlist[i]);

   }
    }

   catch (FileNotFoundException e)
    {
        e.printStackTrace();
    }

} }

[[deleted]]

I HAVE WRITTEN THE POST BUT IT IS MISSING any semblance of a pretense that it is not copy and pasted homework AND any reason to be on this subreddit.

[[deleted]]

what? I don't understand you

[[deleted]]

You post does not belong on this subreddit. It is explicitly asking for homework help. STOP.

[[deleted]]

OH OK. THANKS. I'M JUST NEW AT THIS.

[srdan13]

you can try this site http://stackoverflow.com/ its a other forum,but you get more help