Review Questions

Given the following program, which lines will print 11 exactly?

class MyClass {
    public static void main(String[] args) {
        double v = 10.5;

        System.out.println(Math.ceil(v));        // (1)
        System.out.println(Math.round(v));       // (2)
        System.out.println(Math.floor(v));       // (3)
        System.out.println((int) Math.ceil(v));  // (4)
        System.out.println((int) Math.floor(v)); // (5)
    }
}

Select the two correct answers.

Which method is not defined in the Math class?

Select the one correct answer.

What is the return type of the method round(float) from the Math class?

Select the one correct answer.

What is the return type of the method ceil(double) from the Math class?

Select the one correct answer.

What will the following program print when run?

public class Round {
    public static void main(String[] args) {
        System.out.println(Math.round(-0.5) + " " + Math.round(0.5));
    }
};

Select the one correct answer.

Which statements are true about the expression ((int)(Math.random()*4))?

Select the three correct answers.