Learn

The if-then statement is the most simple control flow we can write. It tests an expression for truth and executes some code based on it.

if (flip == 1) { System.out.println("Heads!"); }
  • The if keyword marks the beginning of the conditional statement, followed by parentheses ().
  • The parentheses hold a boolean datatype.

For the condition in parentheses we can also use variables that reference a boolean, or comparisons that evaluate to a boolean.

The boolean condition is followed by opening and closing curly braces that mark a block of code. This block runs if, and only if, the boolean is true.

boolean isValidPassword = true; if (isValidPassword) { System.out.println("Password accepted!"); } // Prints "Password accepted!" int numberOfItemsInCart = 9; if (numberOfItemsInCart > 12) { System.out.println("Express checkout not available"); } // Nothing is printed.

If a conditional is brief we can omit the curly braces entirely:

if (true) System.out.println("Brevity is the soul of wit");

Note: Conditional statements do not end in a semicolon.

Instructions

1.

The code editor contains an Order class to track retail shipments.

Write an if-then statement that prints High value item! when itemCost is greater than 24.00.

Take this course for free

Mini Info Outline Icon
By signing up for Codecademy, you agree to Codecademy's Terms of Service & Privacy Policy.

Or sign up using:

Already have an account?