Language Game Java

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.LinkedList;
import java.util.Random;
import java.util.Scanner;
import java.util.logging.Level;
import java.util.logging.Logger;


public class Main {

    static LinkedList<String> text1 = new LinkedList<>();
    static LinkedList<String> text2 = new LinkedList<>();
    static String word;

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int rounds;
        pop1();
        pop2();

        System.out.print("How many times do you want to play? ");
        rounds = input.nextInt();

        for(int i = 0; i < rounds; i++)
            display();
    }

    public static void pop1(){
        try {
            Scanner input = new Scanner(new FileInputStream("text1.txt"));
            while(input.hasNextLine()){
                word = input.nextLine();
                text1.add(word);
            }
        } catch (FileNotFoundException ex) {
            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    public static void pop2(){
        try {
            Scanner input = new Scanner(new FileInputStream("text2.txt"));
            while(input.hasNextLine()){
                word = input.nextLine();
                text2.add(word);
            }
        } catch (FileNotFoundException ex) {
            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    public static void display(){
        Random random = new Random();
        int randomNumber = random.nextInt(text1.size()); //7
        int i = -1;

        do {
            i++;

            if(i == randomNumber)
                System.out.println(text1.get(i));
        } while (i != randomNumber + 1);

        System.out.print("The corresponding word in Italian is: ");

        try {
            Thread.sleep(3000);
        } catch (InterruptedException ex) {
            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
        }

        System.out.println(text2.get(i-1));

        for(int a = 0; a < 5; a++)
            System.out.println();
    }
}