Java Programming - Flow Control - Discussion

Discussion Forum : Flow Control - Finding the output (Q.No. 3)
3.
What will be the output of the program?
public class Switch2 
{
    final static short x = 2;
    public static int y = 0;
    public static void main(String [] args) 
    {
        for (int z=0; z < 3; z++) 
        {
            switch (z) 
            {
                case x: System.out.print("0 ");
                case x-1: System.out.print("1 ");
                case x-2: System.out.print("2 ");
            }
        }
    }
}
0 1 2
0 1 2 1 2 2
2 1 0 1 0 0
2 1 2 0 1 2
Answer: Option
Explanation:

The case expressions are all legal because x is marked final, which means the expressions can be evaluated at compile time. In the first iteration of the for loop case x-2 matches, so 2 is printed. In the second iteration, x-1 is matched so 1 and 2 are printed (remember, once a match is found all remaining statements are executed until a break statement is encountered). In the third iteration, x is matched. So 0 1 and 2 are printed.

Discussion:
26 comments Page 2 of 3.

Vijay yadav said:   1 decade ago
Friends x is declared as final so value of x never change please give me correct answer. I haven't satisfy by anyone answer.

Khuddus said:   6 years ago
Remember, once a match is found all remaining statements are executed until a break statement is encountered.

Sekhar said:   1 decade ago
Friends am really not getting the point could please explain any one I need a answer regarding this question?

Shital said:   8 years ago
Sorry but no one explains about final keyword because x is declared as final then how it's value will change.

Bagsari said:   8 years ago
I did not understand how final keyword works and how the control works on the switch statement?

Jayashree said:   9 years ago
Guys! what is the first condition?

What is the connection between loop, x and also cases?

Rishanth said:   10 years ago
If we do not have a break instruction, the next instructions in the loop gets executed!

Sanjay said:   1 decade ago
How 2 is printed in third iteration, ans supposed to be 21012 ?

Hemavathi said:   1 decade ago
I don't understand the output can anyone please explain this?

XYZ said:   1 decade ago
How x-2 matches in the first iteration? I didn't understand.


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