Increment by one
Increasing or decreasing a value by one is so common in programming that Java provides special operators just for this purpose. These shortcuts make your code cleaner and more efficient. Let's practice counting up and down!
This exercise is part of the course
Introduction to Java
Exercise instructions
- Increase
ageby one using the increment operator. - Decrease
daysby one using the decrement operator.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
class AddOne {
public static void main(String[] args) {
int age = 30;
int days = 20;
System.out.println("I'm " + age + " today.");
// Increase the age by 1
____;
// Decrease the days by 1
____;
System.out.println("But I'll be " + age + " soon!");
System.out.println("Only " + days + " to go!");
}
}