Question

Please help me with this question. It is in java and if possible please provide details. Thank you so much. With this question there is no file provide, just make one up.

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. The text file is passed as a command-line argument.

Answer 1

Please find the code below:::

SortWords.java

package fileIO;

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

public class SortWords {

   public static int readFile(String filename,String array[]) {
       Scanner sc = new Scanner(System.in);
       File file = new File(filename); //reading data from this file
       Scanner reader;
       int index=0;
       try {
           //read file using scanner
           reader = new Scanner(file);
           while(reader.hasNext()){
               array[index] = reader.next();
               index++;
           }
       } catch (FileNotFoundException e) {
           System.out.println("file not found");
       }
       sc.close();
       return index;
   }
   public static void main(String[] args) {
       //assume max words are 1000
       String words[] = new String[1000];
       int size;
       String filename;
       Scanner sc = new Scanner(System.in);
       System.out.print("Enter file name : ");
       filename = sc.nextLine();
       size=readFile(filename, words);

      
       //sorting
       for(int i=0;i<size;i++){
           for(int j=i+1;j<size;j++){
               if(words[i].compareTo(words[j])>0){
                   String temp = words[i];
                   words[i] = words[j];
                   words[j]= temp;
               }
           }   
       }
      
       //printing after sorting
       for(int i=0;i<size;i++){
           System.out.println(words[i]);
       }
   }
}

input.txt

this line contains some loooooooooooooong wordsssssssssssssss.
hello!
short line.
this is the last line.

output:

java input.txt 3 line contains some loooooooooooo <terminated>SortWords [Java Application] CAProgram Console Enter file name : input.txt contains line. is the last line. hello! last line line. line. ToooOOooOoooooong short some the this this wordsssssssssssssss.