“how to calculate min, max and average and write the output into into a text file in java” Code Answer’s

package TrialPrograms;

​

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.util.HashSet;

import java.util.Set;

import java.util.TreeSet;

​

public class Test {

​

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

​

​

​

        FileInputStream fi = new FileInputStream("F:\Test\file.txt");

        FileOutputStream fo = new FileOutputStream("F:\Test\output.txt");

        BufferedReader br = new BufferedReader(new InputStreamReader(fi));

        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(fo));

​

        String strLine;

        while ((strLine = br.readLine()) != null)   {

​

              String[] arr = strLine.split(" ");

              String[] nos = arr[1].split(",");

​

              Set<Integer> set = new HashSet<Integer>();  

              for(int i = 0; i<nos.length; i++){

                  int no = Integer.parseInt(nos[i]);

                       set.add(no); 

                    }

              TreeSet<Integer> sortedSet = new TreeSet<Integer>(set); 

​

              switch(arr[0]) {

​

              case "Min:":

                  String msg1="The Min of [" +arr[1]+ "] is " +(Integer)sortedSet.first();

                  bw.write(msg1);

                  bw.newLine();

​

                  break;

​

              case "Max:":

                  String msg2="The Max of [" +arr[1]+ "] is " +(Integer)sortedSet.last();

                  bw.write(msg2);

                  bw.newLine();

                  break;

​

              case "Avg:":

                  Object[] noarray = sortedSet.toArray();

                  int noarraysize = noarray.length-1;

                  int sum=0;

                  for(int i=0;i<=noarraysize;i++) {

​

                      int no=Integer.valueOf(noarray[i].toString());

                      sum = sum + no;

                      if(i==noarraysize) {

                          String msg3="The Avg of [" +arr[1]+ "] is  " +(double)sum/noarray.length;

                          bw.write(msg3);

                          bw.newLine();

                                                  }

                  }

                  break;

​

              case "Sum:":

                  Object[] noarray1 = sortedSet.toArray();

                  int noarraysize1 = noarray1.length-1;

                  int sum1=0;

                  for(int i=0;i<=noarraysize1;i++) {

                      int no=Integer.valueOf(noarray1[i].toString());

                      sum1 = sum1 + no;

                      if(i==noarraysize1) {

                          String msg4="The Sum of [" +arr[1]+ "] is  " +sum1;

                          bw.write(msg4);

                          bw.newLine();

                                                  }

                  }

                  break;

​

            }

​

    }

        br.close();

        bw.close();

​

    }

}

import java.io.File;

import java.util.Formatter;

import java.util.Scanner;

​

public class ExternalData {

​

public static void main(String[] args) {

​

    try {

        System.out.print("Enter the file name with extension : ");

​

        Scanner input = new Scanner(System.in);

​

        File file = new File(input.nextLine());

​

        input = new Scanner(file);

​

        while (input.hasNextLine()) {

            int min = input.nextInt();

            while(input.hasNextInt());

            int num = input.nextInt();

            if(num < min) {

                min = num;

            }

​

            while (input.hasNextLine()) {

                int max = input.nextInt();

                while(input.hasNextInt());

                int num2 = input.nextInt();

                if(num2 > min) {

                    min = num;

​

            String avg = input.nextLine();

​

​

​

​

            Formatter f = new Formatter("C:\Users\Kevin\Dropbox\Kevin 

            Carter-8042\Intro to Soft Eng\Task 12\outputTest.txt");

​

            // print the formatted strings to the file

            f.format("The min of [1,2,3,4,5,6] is " + min);

​

            f.format("nnThe max of [1,2,3,4,5,6] is " + max);

​

            f.format("nnThe avg of [1,2,3,4,5,6] is " + avg);

            f.close();    

            }     

​

            } catch (Exception ex) {

              ex.printStackTrace();

            }

​

          }

​

       }