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Practice using enum

Java Multithreading
Level 5 , Lesson 2
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"Hi, Amigo!"

Java university

"Bilaabo came up with a task for you. Enjoy, my friend:"

7
Task
Java Multithreading, level 5, lesson 2
Locked
New functionality!
Using an enum, implement the getLetterPosition() method, which must return a letter's position. The position of the letter A is 1.
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14
Task
Java Multithreading, level 5, lesson 2
Locked
Don't take the car to the shop!
Initialize the wheels field using data from loadWheelNamesFromDB(). Throw an exception if the data is invalid. Hint: if wheels aren't right, then it's not a car! Don't change the signatures.
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28
Task
Java Multithreading, level 5, lesson 2
Locked
Your own enum
Make Column implement the Columnable interface. See the Javadocs for a description of its methods. Implement the logic of the Column.getVisibleColumns() method. The Column.configureColumns() method is already implemented. Don't change it. Don't create additional fields.
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Comments (4)
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Anonymous #10746173 Level 26
26 February 2022
// TreeMap<Integer,Column> treeMap=new TreeMap<>(); // for(int i=0;i<realOrder.length;i++){ // if(realOrder[i]!=-1){ // treeMap.put(realOrder[i],Column.values()[i]); // } // } // List<Column> result=new LinkedList<>(treeMap.values()); // return result;
Jurij Thmsn Level 29, Flensburg, Germany
1 November 2021
Spent 4 hours on 3rd exercise 😳 so tough! My brain feels like a knot now. I think a few extenisve comments would have helped to understand better.
Henrique Level 41, São Paulo, Brazil
3 August 2020
The conditions in this Multithreading quest are very confusing in every level. In the quests before, the tasks were written in a much more comprehensible way.
Tom Level 41, San Jose, Sweden
26 March 2021
totally agree with u!!