Mastering Java: The Ultimate Quiz for 'Thinking in Java'

How can you generate random numbers in Java?

1. Using an if-else statement

2. Using a Random object

3. By calling the static method Math.random()

4. Both B and C

The correct answer is: Both B and C

Java provides different ways to generate random numbers, but the most efficient ways are by using the Random object and the static method Math.random(). Using an if-else statement will only generate a set of predetermined numbers, which defeats the purpose of generating random numbers. Both options B and C are viable since the Random object is a class in Java that provides convenient methods for generating random numbers, while the Math.random() method generates a double value between 0.0 and 1.0. These options allow for a wider range of random numbers to be generated compared to option A. Therefore, the correct answer is D.