Please modify the following program . The program from Lab4Program1 initialized

Question

                    Please modify the following program . The program from Lab4Program1  initialized the array of words by an assignment statement.                 

                    Modify the program so that it will read from a file, and the name of the file is given as                 

                    a command line argument. For example, if the name of the input file is lab4input.txt,                 

                    you would run the program using:                 

                    c:>java Lab4Program1 lab5input.txt                 

                    each command line argument is stored in the                 

                    String array of the main method ("args[]"). If the line below is used to run the                 

                    program, args[0] should contain the String "lab4input.txt".                 

                    import javax.swing.*;                 

                    public class Lab4Program1 {                 

                    
                    public static void main(String[] args) {
                    
                    String[] wordArray = { "hello", "goodbye", "cat", "dog", "red", "green", "sun", "moon" };
                    String isOrIsNot, inputWord;
                    while(true){
                    // This line asks the user for input by popping out a single window
                    // with text input
                    inputWord = JOptionPane.showInputDialog(null, "Enter a word in all lower case:");
                    if(inputWord.equals("STOP"))
                    System.exit(0);
                    // if the inputWord is contained within wordArray return true
                    if (wordIsThere(inputWord, wordArray))
                    isOrIsNot = "is"; // set to is if the word is on the list
                    else
                    isOrIsNot = "is not"; // set to is not if the word is not on the list
                    
                    // Output to a JOptionPane window whether the word is on the list or not
                    JOptionPane.showMessageDialog(null, "The word " + inputWord + " " + isOrIsNot + " on the list.");
                    }
                    } //main
                    
                    public static boolean wordIsThere(String findMe, String[] theList) {
                    for(int i=0;i<theList.length;i++)
                    if(findMe.equals(theList[i]))
                    return true;
                    return false;
                    } // wordIsThere
                    } // class Lab4Program1                 

Explanation / Answer

import javax.swing.*;
import java.io.*;

class Lab4Program1 {

     static String[] wordArray = new String[100];
public static int readTextFile(String fileName) {

int i=0;
FileReader file = null;

try {
    file = new FileReader(fileName);
    BufferedReader reader = new BufferedReader(file);
    String line = null;
    while ((wordArray[i] = reader.readLine()) != null)
    {
        //System.out.println(wordArray[i]);

       //wordArray[i] = line ;
      i = i + 1;
    }
} catch (Exception e) {
      throw new RuntimeException(e);
} finally {
    if (file != null) {
      try {
        file.close();
      } catch (IOException e) {
        // Ignore issues during closing
      }
    }
}
return i;
}

public static boolean wordIsThere(String findMe,int i)
{
for(int j=0;j<i;j++)
if(findMe.equals(wordArray[j]))
return true;
return false;
} // wordIsThere// cla

public static void main(String[] args) {



      // open up standard input
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

      String fileName = null;

      // read the username from the command-line; need to use try/catch with the
      // readLine() method
      try {
         fileName = br.readLine();
      } catch (IOException ioe) {
         System.out.println("IO error trying to read your name!");
         System.exit(1);
      }

      //System.out.println("File name is, " + fileName);

int i;

i = readTextFile(fileName) ;


String isOrIsNot , inputWord;




// This line asks the user for input by popping out a single window
// with text input
inputWord = JOptionPane.showInputDialog(null, "Enter a word in all lower case:");
if(inputWord.equals("STOP"))
System.exit(0);
// if the inputWord is contained within wordArray return true
if (wordIsThere(inputWord,i))
isOrIsNot = "is"; // set to is if the word is on the list
else
isOrIsNot = "is not"; // set to is not if the word is not on the list

// Output to a JOptionPane window whether the word is on the list or not
JOptionPane.showMessageDialog(null, "The word " + inputWord + " " + isOrIsNot + " on the list.");
}
} //main

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