Java expert please help me the JAVA program below? ----- text.txt ------ Lorem i

Question

Java expert please help me the JAVA program below?

-----text.txt------

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Word Analyzer Write a program that takes a command-line argument representing a text file name. The program should read the given text file and print two lists, each in ascending order One list should be the words that exist only once in the text file. The other list should be the words that appear more than once. Ignore the case of the words when determining whether a word has appeared more than once. Your program may ignore punctuation.

Explanation / Answer

ReadFile.java:

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.*;

public class ReadFile {
public static void main(String[] args) {
   File inFile = null;
   if (0<args.length){
       inFile = new File(args[0]);
   }
   else {
       System.err.println("Invalid arguments count:");
       System.exit(0);
   }
try{
ArrayList<String> lines = get_arraylist_from_file(inFile);
           Collections.sort(lines);
           Map<String, Integer> frequency = new HashMap<String, Integer>();
               for (String element : lines) {
                   if (frequency.containsKey(element)) {
                       frequency.put(element, frequency.get(element) + 1);
                   }
                   else {
                       frequency.put(element, 1);
                   }
               }
               System.out.println();
               System.out.println();
               System.out.println("List of words exist only once:");
               for (Map.Entry<String, Integer> entry : frequency.entrySet()) {
                   if (entry.getValue()==1){
                   System.out.print(entry.getKey()+" ");}
               }
               System.out.println();
               System.out.println();
               System.out.println();
               System.out.println("List of words exist more than once:");
               for (Map.Entry<String, Integer> entry : frequency.entrySet()) {
                   if (entry.getValue()>1){
                   System.out.print(entry.getKey()+" ");}
               }
               System.out.println();
               System.out.println();
       }
              
catch(Exception e){
e.printStackTrace();
}

}
public static ArrayList<String> get_arraylist_from_file(File f)
throws FileNotFoundException {
Scanner s;
ArrayList<String> list = new ArrayList<String>();
s = new Scanner(f);
while (s.hasNext()) {
list.add(s.next());
}
s.close();
return list;
}
}

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