(beginner) How to use a switch statement with strings?

Question

I'm trying to make a simple bank account program to learn classes and OOP. As you may guess, I'm new to Java.

Anyways, my switch statement is not working. I'm trying to make each case based on an inputted string.

Scanner input = new Scanner(System.in);
System.out.println("Enter your name");
//the user enters "user1", "user2", or "user3".
String user = input.next();
//swtich time 
switch (user) {
    case "user1":
        System.out.println("Your balance is" + user1.balance);
        System.out.println("Your Account numer is" + user1.acctnum);
        //shows the balance and account number for user1
    case "user2":
        System.out.println("Your balance is" + user2.balance);
        System.out.println("Your Account numer is" + user2.acctnum);
    case "user3":
        System.out.println("Your balance is" + user3.balance);
        System.out.println("Your Account numer is" + user3.acctnum);
}

Matt · Accepted Answer · 2014-01-03 22:39:49Z

3

You're missing a break statement at the end of each case.

case "user1":
    System.out.println("Your balance is" + user1.balance);
    System.out.println("Your Account numer is" + user1.acctnum);
    //shows the balance and account number for user1
    break;

Without the break statement, all of these statements will be executed

Docs

answered Jan 3, 2014 at 22:39

Matt

2,6821 gold badge19 silver badges24 bronze badges

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

Comments

Sleiman Jneidi · Accepted Answer · 2014-01-03 22:40:52Z

1

You can use Strings in switch statements if you are using Java 7 or above, otherwise you can't

answered Jan 3, 2014 at 22:40

Sleiman Jneidi

23.4k14 gold badges60 silver badges80 bronze badges

Comments

Community · Accepted Answer · 2017-05-23 12:11:34Z

1

You can enumerate the string, and then use switch.

P.S: Please search around a bit and then post questions here ;) Your question is similar to this one (for ex - there are plenty of answers out there)

https://stackoverflow.com/a/338284/878170

edited May 23, 2017 at 12:11

CommunityBot

11 silver badge

answered Jan 3, 2014 at 22:44

0xmtn

2,6805 gold badges30 silver badges53 bronze badges

1 Comment

user3133300 Over a year ago

I search and see that, but somehow I just didn't notice the break statements! Sorry!

Mitesh Pathak · Accepted Answer · 2014-01-03 22:49:52Z

You are missing break; statement and hence all statements after selected case will be executed.

Here's an example of switch-case [1]

public class SwitchDemo {
  public static void main(String[] args) {

    int month = 8;
    String monthString;
    switch (month) {
        case 1:  monthString = "January";
                 break;
        case 2:  monthString = "February";
                 break;
        case 3:  monthString = "March";
                 break;
        case 4:  monthString = "April";
                 break;
        case 5:  monthString = "May";
                 break;
        case 6:  monthString = "June";
                 break;
        case 7:  monthString = "July";
                 break;
        case 8:  monthString = "August";
                 break;
        case 9:  monthString = "September";
                 break;
        case 10: monthString = "October";
                 break;
        case 11: monthString = "November";
                 break;
        case 12: monthString = "December";
                 break;
        default: monthString = "Invalid month";
                 break;
    }
    System.out.println(monthString);
  }
}

[1] http://docs.oracle.com/javase/tutorial/java/nutsandbolts/switch.html

Collectives™ on Stack Overflow

(beginner) How to use a switch statement with strings?

4 Answers 4

Comments

Comments

1 Comment

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

Comments

Comments

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related