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javaswitch-statementbluej

Switch Case In BlueJ

public class Hello {
  public static void main(int a) {
    switch (a) {
      case 1:
        System.out.println("Hi");
    }

    switch (a) {
      case 2:
        System.out.println("Hello");
    }
  }
}

Hi, I want to know if it is possible for me to use Switch Case for the same variable twice, like I've done in the snippet attached. Thanks.

Solution

  • The code you have provided works. So long as the variable a is in scope, you can use it for as many switch statements as you like.

    If you want to check for multiple values of a in the same switch, then you should use different cases. E.g.:

    switch (a) {
  case 1:
    System.out.println("a was 1");
    break; // if we did not break, then execution would "fall-through" to the next case
  case 2:
    System.out.println("a was 2");
    break;
  default:
    System.out.println("a was not 1 or 2");
}

    Find out more about the switch statement in the Java Documentation.