Read word from file to array and select a word randomly form array

Question

Trying to read about 25,000 words from file and put it in arraylist and selects random word from the arraylist. Stuck at creating array, filling array, randomly selecting the word in the array. But got a weird result.
Code:

package se.simple;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.*;

public class WordHandler {

    public static void main(String[] args) {

        List<String> words = new ArrayList<String>();
        try (BufferedReader br = new BufferedReader(new FileReader("/Users/FOOOOO/NetBeansProjects/ss/words.txt")))
        {
            String sCurrentLine;
            while ((sCurrentLine = br.readLine()) != null) {
                            words.add(sCurrentLine);
                System.out.println(words);
            }

        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}

Everything is printed out in one line. But now I need to randomly select a word from arraylist.

[10th, 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, a, AAA, AAAS, Aarhus, Aaron, AAU, ABA, Ababa, aback, abacus, abalone, abandon, abase, abash, abate, abater, abbas, abbe, abbey, abbot, Abbott, abbreviate, abc, abdicate, abdomen, abdominal, abduct, Abe, abed, Abel, Abelian, Abelson, Aberdeen, Abernathy, aberrant, aberrate, abet, abetted, abetting, abeyance, abeyant, abhorred, abhorrent, abide, Abidjan, Abigail, abject, ablate, ablaze, able, ablution, Abner, abnormal, Abo, aboard, abode, abolish, abolition, abominable, abominate, aboriginal, aborigine, aborning, abort, abound, about, above, aboveboard, aboveground, abovementioned, abrade, Abraham, Abram, Abramson, abrasion, abrasive, abreact, abreast, abridge, abridgment, abroad, abrogate, abrupt, abscess, abscissa, abscissae, absence, absent, absentee, absenteeism, absentia, absentminded, absinthe, absolute, absolution, absolve, absorb, absorbent, absorption, absorptive, abstain, abstention, abstinent, abstract, abstracter, abstractor, abstruse, absurd, abuilding, abundant, abusable, abuse, abusive, abut, abutted, abutting, abysmal, abyss, Abyssinia, AC, academe, academia, academic, academician, academy, Acadia, acanthus, Acapulco, accede, accelerate, accelerometer, accent, accentual, accentuate, accept, acceptant, acceptor, access, accessible, accession, accessory, accident, accidental, accipiter, acclaim, acclamation, acclimate, accolade, accommodate, accompaniment, accompanist, accompany, accomplice, accomplish, accord, accordant, accordion, accost, account, accountant, Accra, accredit, accreditate, accreditation, accretion, accrual, accrue, acculturate, accumulate, accuracy, accurate, accusation, accusative, accusatory, accuse, accustom, ace, acerbic, acerbity, acetate, acetic, acetone, acetylene, ache, achieve, Achilles, aching, achromatic, acid, acidic, acidulous, Ackerman, Ackley, acknowledge, acknowledgeable, ACM, acme, acolyte, acorn, acoustic, acquaint, acquaintance, acquiesce, acquiescent, acquire, acquisition, acquisitive, acquit, acquittal, acquitting, acre, acreage, acrid, acrimonious, acrimony, acrobacy, acrobat, acrobatic, acronym, acropolis, across, acrylate, acrylic, ACS, act, Actaeon, actinic, actinide, actinium, actinolite, actinometer, activate, activation, activism, Acton, actor, actress, Acts, actual, actuarial, actuate, acuity, acumen, acute, acyclic, ad, Ada, adage, adagio, Adair, Adam, adamant, Adams, Adamson, adapt, adaptation, adaptive, add, added, addend, addenda, addendum, addict, Addis, Addison, addition, additional, additive, addle, address, addressee, Addressograph, adduce, Adelaide, Adele, Adelia, Aden, adenine, adenoma, adenosine, adept, adequacy, adequate, adhere, adherent, adhesion, adhesive, adiabatic, adieu, adipic, Adirondack, adjacent, adject, adjectival, adjective, adjoin, adjoint, adjourn, adjudge, adjudicate, adjunct, adjust, adjutant, Adkins, Adler, administer, administrable, administrate, administratrix, admiral, admiralty, admiration, admire, admissible, admission, admit, admittance, admitted, admitting, admix, admixture, admonish, admonition, ado, adobe, adolescent, Adolph, Adolphus, Adonis, adopt, adoption, adoptive, adore, adorn, adposition, adrenal, adrenaline, Adrian, Adriatic, Adrienne, adrift, adroit, adsorb, adsorbate, adsorption, adsorptive, adulate, adult, adulterate, adulterous, adultery, adulthood, advance, advantage, advantageous, advent, adventitious, adventure, adventurous, adverb, adverbial, adversary, adverse, advert, advertise, advice, advisable, advise, advisee, advisor, advisory, advocacy, advocate, Aegean, aegis, Aeneas, Aeneid, aeolian, Aeolus, aerate, aerial, Aerobacter, aerobic, aerodynamic, aerogene, aeronautic, aerosol, aerospace, Aeschylus, aesthete, aesthetic, afar, affable, affair, affect, affectate, affectation, affectionate, afferent, affiance, affidavit, affiliate, affine, affinity, affirm, affirmation, affirmative, affix, afflict, affluence, affluent, afford, afforest, afforestation, affricate, affront, Afghan, Afghanistan, aficionado, afield, afire, aflame, afloat, afoot, aforementioned, aforesaid, aforethought, afoul, afraid, afresh, Africa, afro, aft, aftereffect, afterglow, afterimage, afterlife, aftermath, afternoon, afterthought, afterward, afterword, again, against, Agamemnon, agate, Agatha, agave, age, Agee, agenda, agent, agglomerate, agglutinate, agglutinin, aggravate, aggregate, aggression, aggressive, aggressor, aggrieve, aghast, agile, aging, agitate, agleam, Agnes, Agnew, BUILD STOPPED (total time: 30 seconds)

Answer 1

Hmm I don't want to just do this all for you. It seems like it's an assignment. I will however give a template for how you could do it.

1. Create a method that just reads in the words file to an array list of words.

2. Create a method that randomly picks an element from your list of words.

3. In your main method call on method 1 to create your word list. Call on method 2 as many times as you need to in order to print off enough random words.

Answer 2

look at this 2 things and try to modify this code that i wrote. How do I generate random integers within a specific range in Java? String array initialization in Java

        BufferedReader br = null;

        String words[] = new String[4];
        int i=0;
        try {

            String sCurrentLine;
            String word; 

            br = new BufferedReader(new FileReader("/Users/FOOOOO/NetBeansProjects/ss/words.txt"));

            while ((sCurrentLine = br.readLine()) != null) {
                words[i]=sCurrentLine;
                i++;
            }

            Random rn = new Random();
            int x = rn.nextInt(3)+1;
            System.out.println(words[x]);

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (br != null) {
                    br.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }

Answer 3

package se.simple;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.*;

public class WordHandler {

    public static void main(String[] args) {

        //1. Create an array
        List<String> words = new ArrayList<String>();

        //2. Read a file line by line and add file words to words array.
        try (BufferedReader br = new BufferedReader(new FileReader("/Users/FOOOOO/NetBeansProjects/ss/words.txt"))) {
            String sCurrentLine;
            while ((sCurrentLine = br.readLine()) != null) {
                words.add(sCurrentLine);
                //System.out.println(words);
            }

            System.out.println(words);

        } catch (IOException e) {
            e.printStackTrace();
        }

        System.out.println(words.size());

        //3. Randomizing to pick up a word from arraylist
        Random rand = new Random();
        int randomNumber = rand.nextInt(words.size() - 1) + 1;

        System.out.println(randomNumber);

        //4. Prints the randomly selected word. 
        String word = words.get(randomNumber);
        System.out.println(word);

        //5. Gets the word length.
        int dashedWord = word.length();
        System.out.println(dashedWord);

        //6. Prints the word as dashes. 

         for(int x = 0; x < dashedWord; x = x+1) {
         System.out.print("-");
        }
    }
}