Question

● Write a program that reads words from a text file and displays all the words (duplicates allowed) in ascending alphabetical order. The words must start with a letter. Must use ArrayList.

MY CODE IS INCORRECT PLEASE HELP

THE TEXT FILE CONTAINS THESE WORDS IN THIS FORMAT:

drunk
topography
microwave
accession
impressionist
cascade
payout
schooner
relationship
reprint
drunk
impressionist
schooner

THE WORDS MUST BE PRINTED ON THE ECLIPSE CONSOLE BUT PRINTED OUT ON A TEXT FILE IN ALPHABETICAL ASCENDING ORDER IS PREFERRED

THANK YOU IN ADVANCE

import java.util.ArrayList;
import java.util.Arrays;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
import java.util.Collections;
import java.util.List;

public class ArrayListAscending {

   public static void main(String[] args) {
      
       try {
           File j = new File("C:\\Users\\NaharaY\\Dropbox\\Jesse -23263\\Introduction to Software Engineering\\Task 20\\words.txt");
           Scanner input = new Scanner(j);
           List<String>list = new ArrayList<String>();
           String line = "";
           while(input.hasNext()) {
               list.addAll(Arrays.asList(line.split(" ")));
           }
           Collections.sort(list);
           for(String temp:list) {
               if(temp!=null &!temp.equals(""))
                   if(Character.isLetter(temp.charAt(0)))
                       System.out.println(temp);
           }
           input.close();
       }catch(FileNotFoundException e) {
           System.out.println("Error");
       }

   }

}

Answer 1

// Please find the required solution

// add required imports for File handling
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

// add required imports for java util
import java.util.List;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Arrays;


//
public class ArrayListAscending {

    public static void main(String[] args) {

        try {

            // create file instance
            File words = new File("words.txt");// please update the file path when required

            // provide file instance to scanner
            Scanner input = new Scanner(words);

            // define list
            List<String> list = new ArrayList<>();
            String line = "";

            //  add words upon iterating each line
            while (input.hasNextLine()) {
                line = input.nextLine();
                list.addAll(Arrays.asList(line.split(" ")));
            }

            // print list before sorting
            System.out.println("------- List Before Sorting ----------");
            System.out.println(list);

            // print list after sorting
            System.out.println("------- List After Sorting ----------");
            Collections.sort(list);
            System.out.println(list);

            // print list after sorting and starts with letter
            System.out.println("------- List After Sorting  and starts with letter ----------");
            for (String temp : list) {
                if (Character.isLetter(temp.charAt(0)))
                    System.out.println(temp);
            }

            //  finally close the scanner resource
            input.close();
        } catch (FileNotFoundException e) {
            // this exception is caught if the file is not found
            System.out.println("Error file not found");
        }

    }

}

Sample output:

code screenshot: