java - Outputting users answers and the correct answers in the method "void quizResults()" -

class quizmethods {     string [] questions = new string [20];     string [] answers   = new string [20];     string [] correctanswers = new string [20];     int score;      void fillarrays() {             questions[0] = " lead guitarist of led zeppelin?";           correctanswers[0] = "jimmy page";          questions[1] = "who lead singer of led zeppelin?";          correctanswers[1]= "robert plant";          questions[2] = "who lead guitarist of pink floyd?";           correctanswers[2] = "david gilmour";          questions[3] = "who bassist , main lyricist of pink floyd?";          correctanswers[3]= "roger waters";          questions[4] = "under category of music pink floyd entitled too?";           correctanswers[4] = "soft rock";          questions[5] = "under category of music metallica entitled too?";          correctanswers[5]= "trash metal";          questions[6] = "who lead guitarist of metallica?";           correctanswers[6] = "kirk hammet";          questions[7] = "who lead singer , rhythm guitarist of metallica?";          correctanswers[7]= "james hetfield";          questions[8] = "who lead guitarist of guns n roses?";           correctanswers[8] = "slash";          questions[9] = "who lead singer of guns n roses?";          correctanswers[9]= "axl rose";          questions[13] = "under category of music guns n roses entitled too?";          correctanswers[13]= "hard rock";          questions[11] = "who bassist of guns n roses?";          correctanswers[11]= "duff mckagan";          questions[12] = "name biggest , sold album of pink floyd";           correctanswers[12] = "the wall";          questions[13] = "under category of music zz top entitled too?";          correctanswers[13]= "blues rock";          questions[14] = "who lead guitarist , vocalist of zz top?";           correctanswers[14] = "billy gibbons";          questions[15] = "who considered king of blues?";          correctanswers[15]= "bb king";          questions[16] = "who lead singer popular band queen?";           correctanswers[16] = "freddie mercury";          questions[17] = "who lead singer heavy metal band black sabbath?";          correctanswers[17]= "ozzy osbourne";          questions[18] = "who lead guitarist of dire straits?";           correctanswers[18] = "mark knopfler";          questions[19] = "complete sentence.alphaville released song named _______ _______ in september 1984.";          correctanswers[19]= "forever young";     }      void takequiz(){         string answer;         int i;         (i = 0; < 20; i++) {             system.out.print(questions[i] + "\nanswer: ");             answer = keyboard.readstring();             answers[i] = answer;              if (answer.equalsignorecase(correctanswers[i])) {                 score++;             } else {                 score--;             }         }     }      void quizresults() {     }      void performancecomment() {     }      void exit() {     }      void menu() {         system.out.println("1. take quiz");         system.out.println("2. quiz results");         system.out.println("3. performance comment");         system.out.println("4. exit");         system.out.print("choose above:");         byte menu = keyboard.readbyte();         switch(menu) {          case 1:              takequiz();             break;          case 2:             quizresults();             break;          case 3:             performancecomment();             break;          case 4:              exit();                 }     } } 

i output users answers , correct answers in method void quizresults(). don't know use this. how can end program in method void exit()?

you have stored user's answers , have correct answers in arrays. indexes should line up, can cycle through arrays , output screen.

something like:

public void quizresults(){     for(int = 0; i<20; i++){         system.out.println("question: #" + i);         system.out.println("you answered: " + answers[i]);         system.out.println("correct answer: " + correctanswers[i]); } 

i recommend put in default case switch statement. if user enters other 1,2,3 or 4, need handle in appropriate way (i.e. message stating entered invalid option.)