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public class Switch {
    public static void main(String[] args) {
        //Except switch else were {} are optional
        //switch(5)//error
        //cases and default is optional
        // switch(90)//valid
        // {
                //   Every statement inside switch must be under some case (or) default.
                //   Independent statements are not allowed
        //         System.out.println("I am independent statement");//error
        // }
        int x=90;
        final int y=2;
        switch (90) {
            //Every case lable should be compile time constant else we get Error
            case x://error
                System.out.println("cdcd");
                break;
            case y://This is valid as y is final variable
            default:
                System.out.println(" I addcd");
                break;
        //Every Case label should be in range of Switch argument type
        //here we are using byte so case label should in range of byte (-256 to 255)
        byte b = 10;
        switch (b) 
            case 10:
                System.out.println("10");
            case 100:
                System.out.println("100");
            case 1000://error
                System.out.println("1000");
        //Within switch statement we can default only once
        switch(89)
            case 89:
                break;
            default:
            default://error

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