AutoCorrect/Replace a word that is similar to a word in a file text

The intentions of this program is to prompt a user to enter a file name, and then reads the file. The program will prompt the user to enter a word that needs to be corrected. So lets say I have a text file containing "My name is OP and I Like goind to the Park!" I want to change "goind" to "going",

Now, my second method "isSimilar" executes a similar word with more than one same letter and same length, but I dont know how to execute that whole thing in my third method "correctThisLine" . Any tips on how i can call that isSimilar method and read in that text file and change that word into that?

Sorry for my newbie code, its amongst my first assignments. Much appreciated ! :)

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

public class WahidMuhammadA3Q2{

 String fileName = "AutoCorrectMe.txt";
 public static void main (String [] args){
    Scanner sc = new Scanner (System.in);

 String name = getFileName(); 
  }


  public static String getFileName(){
   Scanner sc = new Scanner (System.in);
   String name; 

  do { 
    System.out.println("Please enter the name of the file, and include .txt");
    name = sc.nextLine();
  }while (!name.toLowerCase().endsWith(".txt"));

  return name;
  }

 public static boolean isSimilar(String s1, String s2)
{
     boolean similarWords = true;

     if(s1.length()!=s2.length()){
       return similarWords = false;
     } 

     for (int i = 0; i<=s1.length(); i++){
       for (int j = 0; j<=s2.length(); j++){
         if(s1.charAt(i)!=s2.charAt(j)){
           return similarWords = false; 
         }
         else return similarWords;
        }
}
 return similarWords; }

 public static String correctThisLine(String currentLine, String correctedWord){
  Scanner sc = new Scanner (System.in);

  Scanner file = new Scanner(fileName);

  System.out.println("which word would you like to auto correct: ");
   String correctWord = sc.nextLine();



  }
}