Real-Life Example

Real Life Example

Let's use booleans in a real-life example where we want to find out if a person is old enough to vote.

In the example below, we use the >= comparison operator to find out if the age (25) is greater than OR equal to the voting age limit, which is set to 18:

Example

int myAge = 25;
int votingAge = 18;
System.out.println(myAge >= votingAge);

An even better approach would be to wrap the code above in an if...else statement, so we can perform different actions depending on the result:

Example

int myAge = 25;
int votingAge = 18;

if (myAge >= votingAge) {
  System.out.println("Old enough to vote!");
} else {
  System.out.println("Not old enough to vote.");
}

Note: Booleans are the basis for all Java comparisons and conditions. You will learn more about conditions (if...else) in the next chapter.