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Java program to demonstrate an enum in switch case

Java example to demonstrate an enum in switch case.
Submitted by Nidhi, on April 04, 2022

Problem Solution:

In this program, we will create a vehicle enumeration using "enum" inside the class Main. Then we will use an enum constant with a switch case inside the main() method and print the appropriate message.

Program/Source Code:

The source code to demonstrate an enum in the switch case is given below. The given program is compiled and executed successfully.

// Java program to demonstrate an enum 
// in switch case

public class Main {
  enum Vehicle {
    BIKE,
    CAR,
    BUS
  }

  public static void main(String[] args) {
    String str = "BUS";

    switch (Vehicle.valueOf(str)) {
    case BIKE:
      System.out.println("BIKE is for 2 persons.");
      break;

    case CAR:
      System.out.println("CAR is for 5 persons.");
      break;

    case BUS:
      System.out.println("BUS is for 50 persons.");
      break;

    default:
      System.out.println("Unknown Vehicle.");
      break;
    }
  }
}

Output:

BUS is for 50 persons.

Explanation:

In the above program, we created an enumeration Vehicle inside class Main. The enum Vehicle contains 3 constants BIKE, CAR, BUS. The Main class also contains a static method main(). The main() method is the entry point for the program, here we created a string initialized with "BUS". Then we converted the string into an enum constant using the valueOf() method and used it in a switch case and printed the appropriate message.

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