Building a Multiple Choice Quiz | Java | Tutorial 29

[@Eizuuu]

you are literally better at explaining code than my "professional" college prof. I feel like I should be paying you instead of him.

[@SupreethM]

alternate code: public class mcq1 { public static void main(String[] args) { Scanner type = new Scanner(System.in); int score=0; String q1= "what color are apples? " +"(a)red (b)blue "; System.out.println(q1); String ans1=type.nextLine(); if(ans1.equals("a")){ score++; } String q2= "what color are bananas? " +"(a)red (b)yellow "; System.out.println(q2); String ans2=type.nextLine(); if(ans2.equals("b")){ score++; } System.out.println("you have scored:"+score+"/2"); } }

[@bonzaii61]

Appreciate this man

[@enlightened7354]

Procedure way of writing in your future projects will you, fuck. Up.

[@ToastOfTheUndeadOFF]

appreciate this, gonna use this as a skeleton for my code

[@VentusAstra]

thank u so much!!

[@AyshaFilms]

Just found this gem of a tutorial, thank you it simple to understand! Im new to coding, this taught me a lot

[@ranjanadissanayaka5390]

this is very creative. And extremely well explained. Thanks so much Mike.

[@juniorr_gomez]

Can you put a tutorial on this similar topic but using ArrayList

[@peacekeepermoe]

Thanks for this video I managed to get most of my assignment done by following this :D

[@Maen963]

Well copying assignments doesn't make a good programmer !

[@Sofiacchi]

Hi! I tried doing this, but i created an array for the questions and another one for the answers. At 12:13 I put it inside a for loop so i could do "new Questions(questionsarray[i], answersarray[i])" but then i can't do the "takeTest(questions)" part cause it doesn't recognize the questions variable. I tried inicializing it in other ways but there's always an error. How should i do it, any advice? Thanks

[@lucasizquierdo7649]

NGL you just made something so complicated seem so simple... Thank you :)

[@renecabuhan1675]

Yeah I notice that as wll

[@AelroeZewdie]

Thank you, no seriously thank you, I just finished my assignment because of this

[@bellalahyoussef4035]

this guy is awesome ,he makes everything look so easy! thank you man you saved my ass

[@JudePhilips]

On the off chance you see this because this comment is almost 4 years late, I would like to let you know your series of c++ and java are fantastic.

[@falgunijaitly1782]

Hi Mike! You are doing absolutely amazing. Please keep up. I am going through all your tutorials however for this one I have a question. Would this be an example of abstraction or encapsulation? Under which OOPs principle this falls under? And how?

[@hadr1an914]

Thanks for this tutorial, it greatly helped my output test!

[@utjitaanitamunamava2281]

I like the way you teach Java thank you very much you came to rescue me

[@goico6223]

source code? your website does not display

[@simpleguy7912]

you find it or not

[@fengshili5624]

Hi,I have some problem creating 20 questions quiz game.I can't define my variable.can you help me with that.thanks!

[@alidabot6022]

Hi! Can you please put out a tutorial on the same topic but in JFrames with designing

[@raomuhammadusama9244]

I'm Building a Quiz Management System using JFrame Form in netbeans if you're interested I'll let you see

[@hyungminkim6664]

Gaming Hype yes please

[@raahimanil1719]

@@raomuhammadusama9244 pls share the System

[@thelawgameplaywithcommenta2654]

I added additional if statements to give different responses to varying scores.

[@asniceful]

Hi Mike, Great work with your Java tutorials. I was just wondering why you chose double quote for the answer a ("a") instead of single quotes ('a') since 'a' is a character.

[@williamselinder9138]

Im no pro here, and you probably know why already, but I think its because its a string and not a character.

[@wasifshahzad5001]

ya me too, by using character we could've even saved up memory

[@azudora8255]

Thanks for the tutorial! This is more understandable than how my prof teaches

[@k-universe0022]

great explanation 👏

[@gennilynpanizares1557]

This really helps me a lot thank you so muchhh

[@bittushah9311]

Thank You! It is worth to have such video. It helped me a lot. Once again Thank You!.

[@kifter4254]

Thank you man. You should do a java tuotorial for beginners. Would be amazing.

[@scottisitt]

I added messages to the score checker: if(answer.equals(questions[i].answer)) { System.out.println("Nice!"); score++; }else { System.out.println("Nope!"); } Also added different messages depending on your score. if(score == questions.length) { System.out.println("You got " + score + " out of " + questions.length + "! Nice job!"); }else if(score < questions.length && score > 0) { System.out.println("You got " + score + " out of " + questions.length + "! Not bad."); } else { System.out.println("You got " + score + " out of " + questions.length + "! That's a crap score!"); }

[@Samiullah-sk6er]

Thanks A lot For giving such code idea !

[@daniellecruz3311]

This is awesome. Thank you very much.

[@geriatricmillenial1983]

hey great video just wanted to ask what the reason to create another class. Can I just have one class for this program?

[@rezstrike]

did u find the answer to ur question ?

[@SupreethM]

yes, you may have one class itself(personally consider it better), you do not have to create another. he might have created another class just for better understanding and to show how classes are used.

[@marygracelabuan1616]

You're great ,thanks sir.

[@jeffreywong3577]

Thank you, Please keep up creating new videos

[@xlsupermonkeylx6643]

Is there a better way to do a questionnaire type thing that can accept user input and multiple-choice questions?

[@inspirationalquotes5840]

Thank you. That was helpful

[@stefanopenrhyn6501]

Hi thanks for the video! It is very useful seeing the colours so you can easily identify the connections among the objects. Are you using a specific version of Java ?

[@c123ian]

he is using Eclipse, a program you use to write Java www.eclipse.org

[@SupreethM]

you can change the colors in your own ide

[@sritamabanerjee1331]

Hello Mike ..Can we do the same in blue j ?

[@ufotofu9]

When you create an instance of the Question class, you made it an array. I wasn't aware that you could do that. Could you explain a bit more about creating class objects and using them as "data types"? I find it confusing.

[@eagerassaultixopi4558]

same, have you figured it our yet ?

[@shantb364]

Questions: lets say for question 1 the answer was “a”, will it give a wrong answer if the user entered “A”? Because I’m not sure if case-insensitivity was coded.

[@DriveBreakFixRepeat]

Yes it will. Inside for the for loop when you accept the answer, do this: "String answer = scanner.nextLine().toUpperCase();" // or ".toLowerCase()" depending on how you write the code.

[@peacekeepermoe]

I couldn't find the source code for this exercise... Got a link to it somewhere?

[@abdeljalil1841]

thank you so much Mike

[@itbrezel]

Hey Thank you very much for this amazing Video! I have one question: why do we have given the Question the attribute prompt? What kind of purpose does it have?

[@coreyoneill7422]

Can you upload the Source code? Website is not showing it.

[@user-ne6iy4xz1u]

thanks for teaching us

[@jughnnneeelll]

thanksss for thisss, but my problem is that how to use the try catch method using this?

[@ericgoovaerts2603]

how to print the two strings (prompt and answer) together? System.out.print( questions[x].prompt,answer) did not work ?

[@har9106]

thank u , u saved my life

[@markdalogdog1864]

How to random the questions and answer?

[@theencryptedpartition4633]

Don't we need like setters and getters for these?

[@Leprolifique]

please help? How can i use if/else statement to allow user to run program multiple times, otherwise pressing any other key to exit?

[@ZombieNicolas]

I think you what you need is a do{ "your program" }while(statment for leaving the program);

[@SupreethM]

use a loop rather

[@KJOB]

tough questions you made there

[@moon_wei]

is this done on BlueJ ?

[@johnvincentgenobaten6402]

how to make this questions with scoring in try-catch exceptions?

[@anonymouscat02]

is there a way that i can get these questions randomly ordered?

[@mrboyban]

just enter the random function

[@jorelletuyor]

Can you please tell me the codes to be used upon applying it to GUI

[@aneesfathima5803]

On which software is the code written ?

[@biswajitsahoo1456]

U are a god for me brother

[@mageshwars5191]

Ok....now how to make those list of questions appear in random order?....

[@memoriser6533]

thanks so much!

[@fahrulrozi409]

can you tell me how to make the questions appear randomly please?

[@jughnnneeelll]

can i also do this on java n-ide app?

[@albinsopaj]

What is the difference between a class type and a primitive data type? I don't see the difference?

[@rahulpradhan5585]

great sir

[@_GauriSanjayBarge]

where can i get the source code

[@yomo2769]

If i wanted to print a variable for a score how would i do that

[@SupreethM]

score is the variable

[@veneraantiquar7214]

Hi, can you please make a tutorial on the same topic but instead of for loop could you please do it in a try-catch block?

[@breadnobones]

yo sameeeeeeed

[@jorelletuyor]

How can I apply this code into GUI?

[@jezzymallo4390]

This helped

[@muktarulhossain5425]

Which IDE best for java project?

[@SupreethM]

eclipse netbeans

[@kifter4254]

How would you do this, if the questions are picking randomly because you I have to use math. random to make the computer pick out a random 10 questions from a total 20. How Would i make them check if the answer is right then? Because question 1 isnt the same question all the time

[@thanapongangkha1417]

You would have to create 20 question objects. Since every object has their own prompt and answer , you just simply use Random class (google it, it's not hard to use) to random number in the range of 20 using nextInt() method and put it in the loop(so it will random new number everytime we pass the loop), in for loop you would use a random number as an index of the question array then do exactly like Mike did. And if you want the user to answer 10 questions, just tell for loop to loop 10 times. Hope this helps.

[@simpleguy7912]

where is the code please send the link

[@bomjex]

thanks for your tutorial. I have a question: How do I put and else statement so, if the answer is wrong the system says: try again. Because the method is void and don't allow to introduce a return statement. I removed the void from the method and wrote the else return but doesnt work. Can you help please

[@thanapongangkha1417]

Have you got the answer yet? If not, you don't have to return anything. You can just use System.out.println("try again"); to display the message. Only return something when you want to store it to use later.

[@SupreethM]

use System.out.println("try again"); under else

[@SupreethM]

use a while statement for it to loop back to make the user try again, but then it will loop until the user gets it correct

[@hollownights6469]

How do I get the percentage?

[@landylandinha38]

Hi Mike, how can I display true and false

[@twosongs7396]

This feature would have to be part of your conditional. Example: if answer = questions[i.answer] println “String True!” Else println “String False, try again” or “String False, better luck next time” or stg like that....

[@banqueen9007]

How can i do that in 2d array?

[@Karslo]

Does anybody know why if we use "==" instead of equals it doesn't work? It works with other strings, but for some reason (even though they print the same character) answer is not == questions[i].answer

[@franzkarlomartinez3493]

How to repeat or retake the quiz?

[@Gracovitz]

THere may be a "clear" button/option in the program that you are using for the project, if not, you can try and code a method that will reset the test once you've done it (maybe add a counter for the number of times you've done it).

[@nikolasgestrich9598]

what would I do if I have multiple correct answers for 1 question

[@twosongs7396]

Add an extra choice letter, say like “d) all of the above” or “d) b and c are correct” - simplest answer possible

[@vanditasingh777]

where is source code?

[@augh7287]

The plus signs are the only signs that have error can someone help me fix this problem?

[@bryanochoa2464]

what if i input other letter/number in the answer. i mean how can i repeat the question if i did that? sorry for my english..

[@thanapongangkha1417]

Hi. You can do that by using while loop (eg. While(true) ) and set the condition like this. if (!keyboardInput.equals("a") || !keyboardInput.equals("b") || !keyboardInput.equals("c")) ). Remember that !a.equals(b) means "a is NOT equal to b" and || means "or". The code above is to check if the input is equal to a, b, c or not. If not, keep getting the input till the user input one of them. In the else statement put "break;" to exit the loop when the user input one of them.

[@SupreethM]

for such cases learn about "try and catch" it will make your code much better

[@MMMMEEKK]

This is OOP ??

[@matrimanuel_791]

I didn't understend very well the part of code of the parameters of takeTest. takeTest(questions); ^ public static void takeTest (Question [] questions) ^

[@anusha0624]

How would I do this using JOption and Radio Buttons?? Anybody??

[@ashwinibagali7658]

Which algorithm is used sir???

[@jyotiprakash9186]

nice

[@ahndreiybuscado5936]

Why does he put another public class? What's the purpose of that?

[@jrick3086]

your codes is error

[@BennyAshurov]

i am stuck please help

[@kifter4254]

How would I do this using math.random

[@boss_aj514]

Same question here iwant the question to be in a random

[@joelsiennicki3590]

recommend watching at 1.5 speed.

[@boss_aj514]

Can you make a vid for making a random question ?

[@itswanadiaries]

it doesnt work

[@kshitiz4336]

Java

[@pranavacharya6728]

error: non-static variable this cannot be referenced from a static context Question q[]={new Question(q1,"a"),new Question(q2,"b")}; ^ error: non-static variable this cannot be referenced from a static context Question q[]={new Question(q1,"a"),new Question(q2,"b")};

[@ScienceLifeChronicles]

2024 still here

[@shahzainhaider2801]

Error in line public static void takeTest(Question[] questions){

[@johnroth8585]

questions

[@majaprokic1514]

I love you

[@devoiddude]

2:10 that's a constructor not a method!!!

[@mallucanuck]

a constructor is a method.

[@somarble]

You gotta redo this lesson....hard to follow

[@vanessamaebello2032]

I tried it but sadly, many errors occur 😩💔

[@eye_hope8507]

mine got a lot of error i did what you did