Study tips 1z0-854

What, inserted at line 39, will sort the keys in the props HashMap?

Which two code fragments, inserted independently at line 3, generate the output 4247?

What is the result?

What is the result?

Which two code fragments correctly create and initialize a static array of int elements?

Chain these constructors to create objects to read from a file named “in” and to write to a file named “out”.

What is the result?

Refactor this class to use generics without changing the code’s behavior.

What is the result?

Which code, inserted at line 4, guarantees that this program will output [1, 2]?