If you need to write a function that will compute the cost of some candy, where each piece costs 25 cents, which would be an appropriate function declaration

public static double costOfCandy (int numOfCandy) {

}

Explanation:

In Java programming language the appropriate method declaration is given above.

In this declaration, the method has been named costOfCandy, it will accept one parameter of type int numOfCandy and will return a double value representing the cost of candy.

The complete method definition is given below:

public static double costOfCandy (int numOfCandy) {

double cost = numOfCandy*25;

return cost;

}