The if-else statement

The if-else statement allows you to execute some code only if a certain condition is true, and other code if the condition is false. It is defined as this template:

if ( condition ) {
      if-body
}
else {
      else-body
}

where

• condition is a boolean expression;
• if-body is zero or more statements;
• else-body is zero or more statements;
• The if-else statement executes the code in if-body if and only if condition evaluates to true; otherwise, it executes the code in else-body.

The following code prints one message if the player guessed a the answer to a quiz question correctly and another message if they didn't.

if (playerAnswer == correctAnswer) {
   System.out.println("Correct! Play again?");
} else {
   System.out.println("Sorry, that isn't correct. Try again?");
}