Having trouble figuring out how to pass a file through my method

Question

In this program I'm working on is to readfile through my method named homophone which reads the file and uses a hashmap to find the words that has the most homophones and returns the count of the number of homophones that was the most. My problem is how do I read the file and pass it through the homophone method in the main method. Here is my code so far:

import java.security.KeyStore.Entry;
import java.util.*;
import java.io.*;

public class program2 {
    public static void main(String[] args) throws IOException {
       System.out.println(homophone());
    }

    public static int homophone(String file) throws  FileNotFoundException{
        HashMap<String,Integer> alike = new HashMap<>();
        Scanner input = new Scanner(new File(file));

        while(input.hasNext()) {
            String line = input.nextLine();
            String[] key = line.split("  ");
            if(alike.containsKey(key[1])) {
                alike.put(key[1],alike.get(key[1])+1);
            } else alike.put(key[1],alike.get(key[1]));
        }
        int max = 0;
        for(java.util.Map.Entry<String, Integer> e:alike.entrySet()) {
            if(e.getValue()>max) max = e.getValue();
        }
        return max;
    }
}


Example File Content:
A  AH0
A(1)  EY1
A'S  EY1 Z
A.  EY1
A.'S  EY1 Z
A.S  EY1 Z
A42128  EY1 F AO1 R T UW1 W AH1 N T UW1 EY1 T
AAA  T R IH2 P AH0 L EY1
AABERG  AA1 B ER0 G
AACHEN  AA1 K AH0 N
AACHENER  AA1 K AH0 N ER0
AAKER  AA1 K ER0
AALSETH  AA1 L S EH0 TH
AAMODT  AA1 M AH0 T
AANCOR  AA1 N K AO2 R
AARDEMA  AA0 R D EH1 M AH0
AARDVARK  AA1 R D V AA2 R K
AARON  EH1 R AH0 N
AARON'S  EH1 R AH0 N Z
AARONS  EH1 R AH0 N Z

Answer 1

You need pass a String to your homophone method like that:

System.out.println(homophone("/folder/file.txt"));

Or

System.out.println(homophone(args[0]));

Using the second one, you will need to compile and use a system command line like that:

java program2 "/folder/file.txt"