switch en java

1int day = 4;
2switch (day) {
3  case 6:
4    System.out.println("Today is Saturday");
5    break;
6  case 7:
7    System.out.println("Today is Sunday");
8    break;
9  default:
10    System.out.println("Looking forward to the Weekend");
11}
12// Outputs "Looking forward to the Weekend"

1switch(x){
2	case(0):		//if x == 0
3    	//do some stuff
4    	break;
5    //add more cases
6  default:			//when x does not match any case
7    //do some stuff
8    break;
9}

1System.out.println(
2        switch (day) {
3            case MONDAY, FRIDAY, SUNDAY -> 6;
4            case TUESDAY                -> 7;
5            case THURSDAY, SATURDAY     -> 8;
6            case WEDNESDAY              -> 9;
7            default -> throw new IllegalStateException("Invalid day: " + day);
8        }
9    );

1// syntax of switch statement in java
2switch(expression)
3{
4   case 1 value :
5   // code goes here
6   break;
7
8   case 2 value :
9   // code goes here
10   break;
11
12   case 3 value :
13   // code goes here
14   break;
15   .
16   .
17   .
18   .
19   
20   default: // optional
21   // default code goes here
22}

1int age = 9;
2switch(age){
3  case 1:
4    System.out.println("You are 1 year old");
5  case 5:
6    System.out.println("You are 5 years old");
7  case 9:
8    System.out.println("You are 9 years old");
9  default:
10    System.out.println("Ain't know how many years you are");

1switch (/*Variable*/)
2{
3  case /*Variable*/:
4    /*Action*/;
5    break;        
6  default:
7    /*Action*/;             
8}