Question

You will be writing some methods that will give you some practice working with Lists. Create a new project and create a class named List Practice in the project. Then paste in the following code: A program that prompts the user for the file names of two different lists, reads Strings from two files into Lists, and prints the contents of those lists to the console. * @author YOUR NAME HERE • @version DATE HERE import java.util.ArrayList; import java.util.List; import java.util.Scanner; public class ListPractice { * Reads a list of words from a file - formatted one word per line - and • returns a List of those words in the order they appear in the file. If * there is an error reading the file, displays the error message "ERROR! • File wordsFile not found!" where "wordsFile" is the name of the file. If there is an error reading the file, this method should return an empty • List. • @param wordsFile

Answer 1

ListPractice.java

import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class ListPractice {
  
public static List<String> getList(String wordsFile)
{
Scanner fileReader;
List<String> list = new ArrayList<>();
try
{
fileReader = new Scanner(new File(wordsFile));
while(fileReader.hasNextLine())
{
list.add(fileReader.nextLine().trim());
}
}catch(FileNotFoundException fnfe){
System.out.println("ERROR! File wordsFile not found!");
}
return new ArrayList<>(list);
}
  
public static void displayList(List<String> myList)
{
int counter = 0;
for(String word : myList)
{
System.out.println((counter++) + ": " + word);
}
}
  
public static void main(String[]args)
{
Scanner keyboard = new Scanner(System.in);
System.out.print("Enter a filename: ");
String fname = keyboard.nextLine();
List list1 = getList(fname);
System.out.print("Enter another: ");
fname = keyboard.nextLine();
List list2 = getList(fname);
  
System.out.println("Wordlist 1");
System.out.println("----------");
displayList(list1);
  
System.out.println();
System.out.println("Wordlist 2");
System.out.println("----------");
displayList(list2);
  
keyboard.close();
}
}

********************************************************************** SCREENSHOT *****************************************************

DD DD run: Enter a filename: test1. txt Enter another: test2.txt Wordlist 1 0: the 1: quick 2: brown 3: fox 4 jumps Wordlist 2 0: over 1: the 2: lazy 3: dog BUILD SUCCESSFUL (total time: 7 seconds )