switch

Example

Utilize the switch statement to determine the name of the weekday.

int day = 4;
switch (day) {
  case 1:
    System.out.println("Monday");
    break;
  case 2:
    System.out.println("Tuesday");
    break;
  case 3:
    System.out.println("Wednesday");
    break;
  case 4:
    System.out.println("Thursday");
    break;
  case 5:
    System.out.println("Friday");
    break;
  case 6:
    System.out.println("Saturday");
    break;
  case 7:
    System.out.println("Sunday");
    break;
}
// Outputs "Thursday" (day 4)

Definition and Usage

The switch keyword chooses from multiple code blocks to execute.

 In the provided example:

• The switch expression undergoes evaluation once.
• The expression’s value is compared with the values of each case.
• Upon finding a match, the associated block of code is executed.
• The break keyword is employed to exit the switch block upon encountering a match.