Java Newbie - When to use it? Relating to Boxing/Unboxing I think

Question

• Integer x = 5;
• Integer x = Integer.valueOf(5);

Is there any scenario where I would want to use the 2nd one specifically or is it redundant altogether and shouldn't not bother about it?

Answer 1

Both statements are equivalent.

The statement Integer x = 5 would be compiled to

Integer x = Integer.valueOf(5);

The compiler will do that for you behind the scene, so the only difference is the number of character in source file.

Answer 2

After Java 5 (because of autoboxing / unboxing) there is no difference except the first one is shorter.