CodeGym /Courses /Java Core /Bonus task | Lesson 11 | Level 3

Bonus task | Lesson 11 | Level 3

Java Core
Level 3 , Lesson 11
Available

"Hey, soldier!"

"Good day, General!"

"I've got awesome news for you. Here are some exercises to reinforce your skills. Do them every day and your skills will grow at an insane speed. They were created especially for IntelliJ IDEA."

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Task
Java Core, level 3, lesson 11
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Incorrect lines
Incorrect lines
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Java Core, level 3, lesson 11
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Nice weather
Nice weather
8
Task
Java Core, level 3, lesson 11
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Reading a file
Reading a file
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Java Core, level 3, lesson 11
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Writing to a file from the console
Writing to a file from the console
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Java Core, level 3, lesson 11
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Neo
Neo
3
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Java Core, level 3, lesson 11
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Fixing bugs
Fixing bugs
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Java Core, level 3, lesson 11
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SimpleObject interface
SimpleObject interface
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Java Core, level 3, lesson 11
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Updatable interface in the Screen class
Updatable interface in the Screen class
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Java Core, level 3, lesson 11
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One method in a class
One method in a class
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Java Core, level 3, lesson 11
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Compiling the program
Compiling the program

"Those previous exercises were for rookies. I've added some more advanced bonus exercises for the old-timers. Just for veterans."

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Java Core, level 3, lesson 11
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Sorting even numbers from a file
Sorting even numbers from a file
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Java Core, level 3, lesson 11
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Turnip
Turnip
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Java Core, level 3, lesson 11
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Robot wars
Robot wars
Comments (41)
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Dom Level 21, England, United Kingdom
22 October 2025
The taks where quite simple i enjoyed the robot wars but the file tasks i found really hard but i guess i havent done much of this
Anonymous #11533978 Level 26, Bilbao, Spain
28 July 2024
This topic is completely/really hard and confusing to me.
Simphiwe Level 33, Johannesburg, South Africa
10 March 2023
Question. How do you read lines from a file, instead of reading each character?
Evgeniia Shabaeva Level 42, Budapest, Hungary
8 July 2024
For instance, using scanner.nextLine();
Michael Amann Level 22, United States of America, United States
16 June 2022
The tester is "kaput."
Michael Amann Level 22, United States of America, United States
1 June 2022
Different IDEs yield different results. 😑 Clearly no one cares about variables that are "descriptive..." Today(String type) { this.type = type; }
whoseunassailable Level 28, India, India
27 February 2022
For the "reading a file task", my solution was entirely correct and yet it was having trouble with one condition of "Display the contents of the file on the screen". I tried the codegym solution and yet the same was happening. It happened in the IntelliJ Idea. When i run my code in the browser, it worked like a charm. So, i hope the CodeGym team will fix it asap.
Harward Tony Stark Level 21, Tashkent, Uzbekistan
3 May 2023
Yeah. This is the very problem I have faced with too. It took me many times to realize rather smth wrong not with my solution but theirs. Please, CodeGym members take it into serious account.
Stanislav Mayer Level 15, Czech Republic
24 February 2022
Should you need to refresh your memory about Inputs / Outputs, here you can find the corresponding article: Reading from the keyboard: "readers"
TheLordJackMC Level 39, Princeton, idk somewhere
15 July 2021
i thought captain skittles was, well, a captain. but he's a general now? good job??? who's in charge of the military anyways
ImDevin Level 15, Old Town, United States
4 June 2021
multiple, separated classes & interfaces. starting to look like a real program. some of the tasks were pretty challenging. moving on. happy coding :)
20 May 2021
Robot wars had quite a few syntax and logic errors along with moving of variable declarations between modules. Very tricky, but so satisfying!