JAVA BASIC PART - 4 SWITCH CASE

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-: SWITCH CASE STATEMENT :-

    - A switch statement allows a variable to be tested for equality against a list of values.    

    - Each value is called a case, and the variable being switched on is checked for each case. 

Syntax: 

The syntax of enhanced for loop is:

 switch(expression)

{

     case value :

                 //Statements 

                    break;    //optional 

    case value : 

                //Statements 

                  break;    //optional 

                //You can have any number of case statements. 

    default:    //Optional 

                //Statements

}

RULES :-

The following rules apply to a switch statement: 

 The variable used in a switch statement can only be a byte, short, int, or char. 

 You can have any number of case statements within a switch. Each case is followed by the value to be compared to and a colon. 

 The value for a case must be the same data type as the variable in the switch and it must be a constant or a literal. 

 When the variable being switched on is equal to a case, the statements following that case will execute until a break statement is reached. 

 When a break statement is reached, the switch terminates, and the flow of control jumps to the next line following the switch statement. 

 Not every case needs to contain a break. If no break appears, the flow of control will fall through to subsequent cases until a break is reached. 

 A switch statement can have an optional default case, which must appear at the end of the switch. The default case can be used for performing a task when none of the cases is true. No break is needed in the default case.

Example

class switch_case

{

    public static void main(String arg[])

    {

        int b=10;

       

        switch(b)

        {

            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;

            default:

                System.out.println("Are bhai Week me only 1 to 7 days hi hote he.... :)");

        }

    }

}