7
Nhiệm vụ
Java Multithreading, mức độ, bài học
New functionality!
Using an enum, implement the getLetterPosition() method, which must return a letter's position. The position of the letter A is 1.
14
Nhiệm vụ
Java Multithreading, mức độ, bài học
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.
28
Nhiệm vụ
Java Multithreading, mức độ, bài học
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.