Java Program to Display Non-Duplicate Words from File

GTU JAVA Practical 25

Write a program that reads words from a text file and displays all the nonduplicate words in descending order. The text file is passed as a command-line argument.

				
					import java.io.*;
import java.util.*;

class Practical_25 {
  public static void main(String[] args) {
    if (args.length == 1) {
      String fileName = args[0];
      TreeSet < String > set = new TreeSet < > ();
      File file = new File(fileName);
      try {
        Scanner s = new Scanner(file);
        while (s.hasNext()) {
          set.add(s.next());
        }
        System.out.println(set);
      } catch (FileNotFoundException e) {
        e.printStackTrace();
      }
    } else {
      System.out.println("Please, Pass the File Name as Command Line Argument");
    }
  }
}