Consider the below generic method:
public static <U> void fillBoxes(U u, List<Box<U>> boxes) {
for (Box<U> box : boxes) {
box.add(u);
}
}
Also, this snippet,
Crayon red = ...;
List<Box<Crayon>> crayonBoxes = ...;
Now,
What is the way to invoke the generic method?
a. Box.<Crayon>fillBoxes(red, crayonBoxes);
b. Box.fillBoxes(red, crayonBoxes);
1 comment(s) to... “question 21”
1 comments:
a. Box.<Crayon>fillBoxes(red, crayonBoxes);
This can be used to invoke the method. It is a proper syntax.
b. Box.fillBoxes(red, crayonBoxes);
This is also a proper syntax. It can too be used to invoke the method.
This feature, known as type inference, allows you to invoke a generic
method as you would an ordinary method, without specifying a type
between angle brackets. ‘red’ being a Crayon type, Type ‘U’ refers to
Crayon( :D Smart compiler..he he..).
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