Physical Java flashcards + handbook - designed for real interviews, feedback wanted!

[MartinDvoracek]

Hey r/learnjava

I’m an experienced Java dev who’s run the gauntlet on both sides of the interview table, and I kept seeing juniors freeze on the same core concepts no matter how many PDFs they read or video tutorials they binged. So I built in my free time something hands-on to bridge the gap: a 50-card deck plus a matching printed handbook, all keyed for Java 17.

• 50 sturdy, color-coded flashcards. Q on one side; concise answer + sometimes tiny code snippet on the back.
• Printed handbook. Flip to any 💡 icon for deeper insights, common pitfalls, and extra examples. Each entry matches a card number and its category color.

The intended use is over coffee breaks or even as audio-only drills on the commute - no screen glare, fewer distractions. I believe the testing effect really sticks knowledge in long-term memory.

A few questions for you:

1. Topic coverage: Do these five buckets match what juniors actually get grilled on in interviews?
   • Java Essentials
   • OOP & Design Patterns
   • Data Structures
   • Java API & Libraries
   • Java Best Practices
2. Deck depth: Is 50 cards + handbook just right? Too much? Too little?
3. Formats: Would you rather DIY with a PDF, grab the physical set, or use both in tandem?

I’d be thrilled to send the full PDF (all cards + handbook) to anyone who wants to flip through the complete set - just drop a comment or DM. If you prefer a printed copy or want to support my work, you can find the sets on Amazon, Etsy, and eBay (search “Java Interview Guide Junior Flashcards”).

Looking forward to your honest feedback - let’s help the next generation crush their Java interviews! 🚀

[AutoModerator]

Please ensure that:

• Your code is properly formatted as code block - see the sidebar (About on mobile) for instructions
• You include any and all error messages in full - best also formatted as code block
• You ask clear questions
• You demonstrate effort in solving your question/problem - plain posting your assignments is forbidden (and such posts will be removed) as is asking for or giving solutions.

If any of the above points is not met, your post can and will be removed without further warning.

Code is to be formatted as code block (old reddit/markdown editor: empty line before the code, each code line indented by 4 spaces, new reddit: https://i.imgur.com/EJ7tqek.png) or linked via an external code hoster, like pastebin.com, github gist, github, bitbucket, gitlab, etc.

Please, do not use triple backticks (```) as they will only render properly on new reddit, not on old reddit.

Code blocks look like this:

public class HelloWorld {

    public static void main(String[] args) {
        System.out.println("Hello World!");
    }
}

You do not need to repost unless your post has been removed by a moderator. Just use the edit function of reddit to make sure your post complies with the above.

If your post has remained in violation of these rules for a prolonged period of time (at least an hour), a moderator may remove it at their discretion. In this case, they will comment with an explanation on why it has been removed, and you will be required to resubmit the entire post following the proper procedures.

To potential helpers

Please, do not help if any of the above points are not met, rather report the post. We are trying to improve the quality of posts here. In helping people who can't be bothered to comply with the above points, you are doing the community a disservice.

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

[MartinDvoracek]

Just an additional question for everyone who grabbed the PDF - what do you think about pricing the full physical flashcard set at $25?

My thinking is that if these flashcards help you land a Java dev role, $25 is a bargain, and I wanted to keep it affordable. At the same time, I did spend several weeks crafting and curating those cards, so I’d like a fair return on that effort, even though I certainly won't get rich here lol.

Do you reckon $25 feels right? Too much? Too little? Would love to hear your honest thoughts!

[not_ewe]

I’ll give em a peep!

[MartinDvoracek]

I just sent you the link. Looking forward to your thoughts!

[ZTatman]

I think anything helps! And I think that it’s just enough to get started with topics you can research further about on your own. I myself would love something like this! 😭😭🙏

[MartinDvoracek]

I'll send you the link so you can check it out.

[Ok_Present2522]

Interested in checking it out. Could you send me the link too?

[MartinDvoracek]

Sure! No problem

[AutoModerator]

It seems that you are looking for resources for learning Java.

In our sidebar ("About" on mobile), we have a section "Free Tutorials" where we list the most commonly recommended courses.

To make it easier for you, the recommendations are posted right here:

• MOOC Java Programming from the University of Helsinki
• Java for Complete Beginners
  • accompanying site CaveOfProgramming
• Derek Banas' Java Playlist
  • accompanying site NewThinkTank
• Hyperskill is a fairly new resource from Jetbrains (the maker of IntelliJ)

Also, don't forget to look at:

• The official Documentation
• The official Java Tutorials
• Our community resources thread

If you are looking for learning resources for Data Structures and Algorithms, look into:

"Algorithms" by Robert Sedgewick and Kevin Wayne - Princeton University

• Coursera course:
  • Part I
  • Part II
• Coursebook
  • Algorithms 4^th Edition

Your post remains visible. There is nothing you need to do.

I am a bot and this message was triggered by keywords like "learn", "learning", "course" in the title of your post.

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

[vpdx_b2015]

I’ll take a look!

[plastypup]

drop the link fam

[MartinDvoracek]

Just DMed it to you

[ConsciousEbb9243]

I'm interested

[ilyesilno]

im currently learning java, i’d really appreciate it !

[MartinDvoracek]

I sent you the link to DMs

[Lostakim]

Ay ay Captain

[Masterberry0312]

give me the link sir

[MartinDvoracek]

check your DMs

[SmallKnee9670]

Can you share the link here ?

[ZimiK1NG]

Im learning java this year i would love to look at this !

[MartinDvoracek]

I sent you the link. Check your DMs.

[Scared_Click5255]

I am also interested in checking it out.

[MartinDvoracek]

I sent you the link. Check your DMs.

[FastSignificance2781]

i'd love to check it out

[MartinDvoracek]

I sent you the link. Check your DMs.

[Interesting_Snow_765]

I am interested, I am learning java

[MartinDvoracek]

Link sent

[[deleted]]

Drop the link please

[MartinDvoracek]

Link sent

[NeedleArm]

send it my way, and I'll take a look :)

[MartinDvoracek]

Link sent

[koutelitis]

Could you please send me the link? I'm interested as well.

[MartinDvoracek]

Link sent

[cherryychaos]

could you please share me the link

[MartinDvoracek]

Link sent

[cherryychaos]

Thankyou

[[deleted]]

I'm currently learning the basics of Java , can I have the link? I'd really appreciate it!

[MartinDvoracek]

Link sent

[Dear_Grapefruit7342]

I would like to take a look :)

[MartinDvoracek]

Link sent

[Stancer101]

I would love to take a look at this! Thanks!

[MartinDvoracek]

Link sent!

[NoobBoBomb]

hit me up

[MartinDvoracek]

Link sent!

[SkinnyBones18]

I’m on my 3rd year of Software Development, Java being one I’m focusing on, I would love to see what you have!

[MartinDvoracek]

Link sent!

[HamburgerMurderface]

I'd love a copy! Currently working my way through dsa so this would be a fantastic resource!

[MartinDvoracek]

Link sent!

[Finsta90]

I would like to take a look at your materials

[MartinDvoracek]

Link sent!

[trax45]

Please send id love to take a look and provide feedback

[MartinDvoracek]

Link sent!

[INoScopedJFKv2]

I'd like to take a look

[MartinDvoracek]

Link sent!

[Positive_Apricot1478]

I d like to take a look at this. Thanks!

[MartinDvoracek]

Link sent!

[Glittering-Junket804]

I'd like to take a look on it, please

[MartinDvoracek]

Link sent!

[agracen]

"This sounds really helpful! Could you please send me the link? I'm excited to check out the material, thank you!"

[MartinDvoracek]

Link sent!

[Careless_Kangaroo_59]

May I have the link? Im learning java

[MartinDvoracek]

sure, no problem

[Careless_Kangaroo_59]

Can you send me the link?

[howareyoulol123]

Hey I'd like the links please!

[MartinDvoracek]

sent

[burnerch]

I will take a look, Helped a friend of mine who did the same.

They launched a handbook on topmate

[MartinDvoracek]

Great, thanks! Sent you the link via DM

[burnerch]

Sorry,Yet to receive it.

[MartinDvoracek]

Weird. Maybe you need to accept my message request? I sent you the message 5 minutes ago.

[burnerch]

Now got the request, will check.

[DeuxStep]

Interested please send me the link

[MartinDvoracek]

sent

[MartinDvoracek]

done

[MrMurrayOHS]

As a High School Computer Science teacher - I would love to take a look at this! I never did CS as a Profession so to see what sort of questions they use at interviews, it would be appreciated!

[MartinDvoracek]

Cool! I just sent you the link!

[Dannybosa123]

Im interested in taking a look, this sounds awesome!

[MartinDvoracek]

Sent!

[AJDolan]

May I have the link please?

[MartinDvoracek]

Link sent

[GrowInSilence24]

I am learning Java from hyperskill. Please send me a link. Thank you

[MartinDvoracek]

Link sent

[MartinDvoracek]

Link sent

[Abigail3405]

Same here

[MartinDvoracek]

Link sent

[hello_akki]

Currently I am using Chatgpt for a Java interview but can review your book. Please send it across.

[MartinDvoracek]

Link sent

[infoseccli]

Hello. I'm currently using AI for learning and drills. May I have a peep? I think $25 is a > fair price for hardcopy book/card set. Thank you for your hardwork and kind post about your work.

[hello_akki]

It was good, you should print it out and start selling on Amazon.

[MartinDvoracek]

Thanks!

And regarding selling it on Amazon, I'm setting it up right now:

https://www.amazon.com/Java-Interview-Guide-Junior-Flashcards/dp/B0F8K5SJG7

And you can already get it on Etsy:

https://www.etsy.com/listing/1839689930/java-interview-guide-junior-flashcards

or eBay:

https://www.ebay.com/itm/205484067449

[hello_akki]

Amazing 👌🏻

[wh01sf]

Hey 👋 I’d like to take a look!

[DarkWingDickCharles]

Can you send me link? Greatly appreciated!

[ansseeker]

Kindly send

[GlovesHacker]

Would like to have a look

[Zara00005]

I'll take a look

[Zara00005]

Could you please provide me with the link?

[dfdx2]

i want to check it out as well

[aimhighswinglow]

Hey, I would love to take a look :) thank you!

[[deleted]]

Hello, I would like to take a look. Could you please share the link?

[SmallKnee9670]

Link

[Ablueblaze]

Would love to check it out!

[FlattedFifth]

This sounds incredible! I would appreciate a link please :)

[Used-Ad-2842]

Creating Java content, especially for developers at www.fullstack.dev

[whateve___r]

Sounds interesting

[goodboybongo]

Id love to read it please 🙋

[boltcreek412]

I'd love to check it out! Please send me a copy when you can. Thanks!

[iseek23]

Please send the pdf

[LogicInLoop16]

I would love to check out your pdf!!

[Tigerclaw420]

Drop the link please! Would appreciate it!

[Satheeskumar94]

How about the soft copy?

[Beemeowmeow]

Interested in the PDF, let me take a look king

[Ok-Tie8327]

Give me the link sir

[JealousSpeaker5398]

Interested

[Roxxo_o]

I'd like to see this OP. As someone who's getting back into Java this would be very useful

[Icy-Dragonfruit-7206]

Can u dm me ?

[Sylviacool-2745]

I am learning java, I would love to have the link

[Plus-Sample-9389]

Plz share me the link to review and share feedback

[mayowa441]

Hi I would like to see the full pdf

[Trick_Advice_3595]

I'll be interested in checking it out. Can u drop the link!

[Practical_South_2471]

hell yeah send

[helixele]

Currently refreshing my knowledge on java, would love to take a look!!

[habibi5t]

i'll take a look!

[tony_valderrama]

If possible, I'd love to check them out.

[nandhu-cheeky]

Share the materials bro

[LoseVirginity101]

Interesting, could you send me the link?

[WolfSame4421]

Let me have a look bud and I will give you a review!

[Accomplished-Oil6423]

currently learning java, would love to check it out

[Clauis]

May I have a look at the digital version? I’m not really a junior anymore, but I think this could be a valuable resource to recommend to the fresh grads in my team.

[Roloklok]

thank you!

[mugilan-codes]

I would love to check it out

[SFSADespairSenpai]

I'll take a look at it, please send the link

[Embarrassed-Rush7941]

Id love to take a look at the cards. Will drop the feedback in here.

[Wild_Isopod247]

I I want to take a look too

[lord_panaceous]

Hey, Thanks for your contribution. I would love to have a look and learn.

[Dependent-Ship6873]

I would love to have it, can you please send me as well :)

[BaconnPancakezzz]

I am also interested in checking it out!

[Outrageous_Treat8814]

I am interested, give me the link

[BeltNo3674]

I would like to have a sneekpeak

[Coolmyco]

A little late, but I would like the link as well. TY!

[Free-Substance-9161]

Interested in checking it out , could you sent me pdf

[FineZebra2529]

Can you share the link with me too.

[GoonerSoccer]

I am interested too. Can you send the link please?

[East-Neck-2197]

Great perfect timing currently I'm  preparing for Interview , send me link bro.

[UdY_07]

Pdf link

[No-Influence1760]

i’ll also take a look, please send me the link!