Switch Statements

Question

For switch statements, is it possible to change the value of the switch inside the switch statement so that it can jump around to different cases? Ex:

int w          


        

Answer 1

No, it will not change and will not execute new case statement.

Remember that, once appropriate match is found with the case statement corresponding to a value inside the switch statement, that particular case is executed and once that is executed ( if break is provided after each case to prevent falling through all cases) , then the control returns to the end of switch statement.

Sample Code :

public  class A {
            public static void main(String [] args) {
                    int i=1;
                    switch(i) {
                            case 1 : 
                                    System.out.println("Case 1");
                                    i = 2;
                                    break;
                            case 2 : 
                                    System.out.println("Changed to Case 2");
                                    break;

                             default:
                                    System.out.println("Default");
                                    break;
                            }

                    System.out.println("Final value of i " + i);
            }
    }

Output :

Case 1
Final value of i 2  

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Note : Inserting proper breakpoints, try to debug. You will come to know yourself, what exactly is happening.