Switch case examples

An integer switch case

int type = 3;

switch (type) {
    case 1:
        System.out.println("The type is 1");
        break;
    case 2:
        System.out.println("The type is 2");
        break;
    case 3:
        System.out.println("The type is 3");
        break;
    default:
        System.out.println("Type not found");
}
    

Output

The type is 3
    

The switch can be used with Strings as well. (Starting from JDK 7)

String bloodGroup = "AB";

switch (bloodGroup) {
    case "A":
        System.out.println("Blood type: A");
        break;
    case "B":
        System.out.println("Blood type: B");
        break;
    case "AB":
        System.out.println("Blood type: AB");
        break;
    case "O":
        System.out.println("Blood type: O");
        break;
    default:
        System.out.println("Invalid blood type");
}
    

Output

Blood type: AB

This how to use the switch case with ‘char’ values

char grade = 'D';

switch (grade) {
    case 'D':
        System.out.println("Distinction");
        break;
    case 'C':
        System.out.println("Credit");
        break;
    case 'P':
        System.out.println("Pass");
        break;
    case 'F':
        System.out.println("Fail");
        break;
    default:
        System.out.println("Invalid grade");
}
    

Output

Distinction

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