Converting an if-else-if statement into a switch statement in java

Question

I'm having trouble turning this program from an if-else-if statement into a switch statement. Any help would be appreciated.

import java.util.Scanner;

public class ifToSwitchConversion {


    public static void main(String [] args) {

        // Declare a Scanner and a choice variable
        Scanner stdin = new Scanner(System.in);
        int choice = 0;

        System.out.println("Please enter your choice (1-4): ");
        choice = stdin.nextInt();

        if(choice == 1)
        {
            System.out.println("You selected 1.");
        }
        else if(choice == 2 || choice == 3)
        {
            System.out.println("You selected 2 or 3.");
        }
        else if(choice == 4)
        {
            System.out.println("You selected 4.");
        }
        else
        {
            System.out.println("Please enter a choice between 1-4.");
        }

    }


}

Come on, did you even bother to look up how a switch statement works? — Arash Saidi
– Arash Saidi, Commented Sep 27, 2013 at 0:14
Yeah I'm going to echo Hatori. This was an easy question (which is probably why there were so many quick answers), but typically on StackOverflow you need to show a first attempt, and post when you run in to a specific problem. — Paul Richter
– Paul Richter, Commented Sep 27, 2013 at 0:18
Yeah I'm really sorry about my effortless questioning. It's just that this assigment was due in an hour and I had to go somewhere so I was worried I wouldnt have time to read up on it and write a program. One more time, sorry it wont happen again. — zaynv
– zaynv, Commented Sep 27, 2013 at 0:51

MeIr · Accepted Answer · 2013-09-27 00:18:39Z

4

import java.util.Scanner;

public class ifToSwitchConversion {

public static void main(String [] args) {

    // Declare a Scanner and a choice variable
    Scanner stdin = new Scanner(System.in);
    int choice = 0;

    System.out.println("Please enter your choice (1-4): ");
    choice = stdin.nextInt();


    switch(choice) {
        case 1:
            System.out.println("You selected 1.");
            break;
        case 2:
        case 3:
            System.out.println("You selected 2 or 3.");
            break;
        case 4:
            System.out.println("You selected 4.");
            break;
        default:
            System.out.println("Please enter a choice between 1-4.");
    }

  }

}

answered Sep 27, 2013 at 0:18

MeIr

7,3267 gold badges53 silver badges83 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

arshajii · Accepted Answer · 2013-09-27 00:11:29Z

3

You probably want something like:

switch (choice) {
    case 1:
        System.out.println("You selected 1.");
        break;
    case 2:
    case 3:  // fall through
        System.out.println("You selected 2 or 3.");
        break;
    case 4:
        System.out.println("You selected 4.");
        break;
    default:
        System.out.println("Please enter a choice between 1-4.");
}

I urge you to read the switch statement tutorial, which should explain how/why this works as it does.

answered Sep 27, 2013 at 0:11

arshajii

130k26 gold badges246 silver badges293 bronze badges

1 Comment

zaynv Over a year ago

Right, just did I'm new to this as you can see

Idan Arye · Accepted Answer · 2013-09-27 00:11:27Z

2

switch(choice)
{
    case 1:
        System.out.println("You selected 1.");
        break;
    case 2:
    case 3:
        System.out.println("You selected 2 or 3.");
        break;
    case 4:
        System.out.println("You selected 4.");
        break;
    default:
        System.out.println("Please enter a choice between 1-4.");
}

answered Sep 27, 2013 at 0:11

Idan Arye

12.7k5 gold badges52 silver badges70 bronze badges

Comments

Philipp Maurer · Accepted Answer · 2018-09-17 12:18:57Z

-2

/* Just change choice to 1
 * if you want 2 or 3 or 4
 * just change the switch(2 or 3 or 4) 
 */

switch(1)
{
    case 1:
        System.out.println("You selected 1.");
        break;
    case 2:
    case 3:
        System.out.println("You selected 2 or 3.");
        break;
    case 4:
        System.out.println("You selected 4.");
        break;
    default:
        System.out.println("Please enter a choice between 1-4.");
}

Answer : You selected 1.

edited Sep 17, 2018 at 12:18

Philipp Maurer

2,4886 gold badges21 silver badges26 bronze badges

answered Sep 17, 2018 at 10:59

santhosh

1

1 Comment

Philipp Maurer Over a year ago

Hello santhosh, welcome to Stack Overflow :-) It is great to see, that you want to share your programming expertise with other programmers who are in need. Yet, when helping others it is extremly important to be accurate in your answer and only give answers if you know what you are doning. Otherwise you will most likely make the problem even bigger. Your answer sadly is programmatically and logically not correct. It will neither help the programmer, nor the users of that program to rearrange the code in the way you suggest.

Collectives™ on Stack Overflow

Converting an if-else-if statement into a switch statement in java

4 Answers 4

Comments

1 Comment

Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

Comments

1 Comment

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related