Return True or False Randomly
(Math.random() < 0.5)
returns true or false randomly
The class java.util.Random
already has this functionality:
public boolean getRandomBoolean() {
Random random = new Random();
return random.nextBoolean();
}
However, it's not efficient to always create a new Random
instance each time you need a random boolean. Instead, create a attribute of type Random
in your class that needs the random boolean, then use that instance for each new random booleans:
public class YourClass {
/* Oher stuff here */
private Random random;
public YourClass() {
// ...
random = new Random();
}
public boolean getRandomBoolean() {
return random.nextBoolean();
}
/* More stuff here */
}