CODEWITHSUNDEEP
javaswitch-statement
user2863681
user2863681

Reputation: 27

Java application to provide a menu of different options?

This is some work Which I'd much rather figure out myself although I really cannot seem to sort my code out. On this part of the code I need to provide a menu which the user can select and then will do further function.

Basically all i'm asking is how I go about allowing the user to select an option which will be obtained amongst a Switch statement, although someones got a better idea?

This is my code:

int menuchoice = 1; 
String options;

switch (menuchoice)
{
case 1: options = "Transfer";
        break;
case 2: options = "Recent transactions";
        break;
case 3: options = "Display account details and current balance";
        break;
case 4: options = "Quit";
        break;
}
System.out.println(options);

I realise that "menuchoice = 1" doesn't allow the user to select the option they want without changing the code?? Which Im finding abit confusing.. how can I go about this?

Upvotes: 0

Views: 3581

Answers (2)

Paul Samsotha
Paul Samsotha

Reputation: 209004

You are declaring a new String options for every case, and the Original hasn't been initialized. System.out.println(options) is using the one in the scope which is the original uninitialized one 

String options = "Transfer";

Just use

options = "Transfer";

Change them all

switch (menuchoice)
{
case 1: options = "Transfer";
        break;
case 2: options = "Recent transactions";
        break;
case 3: options = "Display account details and current balance";
        break;
case 4: options = "Quit";
        break;
}

Also to get the menu choice from the user, you should use a Scanner

Scanner scanner = new Scanner(System.in);     // scans the console.

System.out.println("Enter a menu option: ");  // prints to console
int menuOption = scanner.nextInt();           // gets next int from console

Upvotes: 1

prmottajr
prmottajr

Reputation: 1824

You could use a JOptionPane.showInputDialog("your menu here as a String") to allow the user to input (as a String) which option she wants to use, then you can convert the result to int and use the switch to identify the option that was entered.

And yes, you shouldn't create new variables inside the switch, just use the one you created outside it.

Upvotes: 0

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