What is the proper way to defined a method that take two int values and returns their sum as an int value?

Question

Options

• Aint sum(int first, int second) { first + second; }
• Bint sum(int first, second) { return first + second; }
• Csum(int first, int second) { return first + second; }
• Dint sum(int first, int second) { return first + second; }
• Evoid sum (int first, int second) { return first + second; }

• A
  4% (1)
• D
  88% (22)
• E
  8% (2)

Explanation

Option D is correct because a valid method definition requires three things: a return type (int), a method name (sum), parameters with explicit types for each (int first, int second), and a return statement matching the declared return type.

• A is missing the return keyword - first + second is just an expression that gets discarded, so nothing is actually returned.
• B omits the type for second - every parameter must declare its own type independently; you can't share a type across parameters like int first, second.
• C is missing the return type before the method name - Java requires an explicit return type (or void) on every method signature.
• E uses void as the return type but then tries to return a value - void means the method returns nothing, making return first + second a compile error.

Memory tip: Think of the acronym RNPP - Return type, Name, Parameters (each typed), Produce a return value. If any of those four elements is broken or missing, the method won't compile.

No community discussion yet for this question.