using logical OR in switch

[Mapisto]

Hi,

I've been trying to use "||" in switch, but it won't let me.
I'm pretty sure there must be a way, coz if i want the same result for e or E, it's just weird to copy paste everything again in a new case.

here's a part of my program:

switch (user_choice.charAt(0)) {
case 'a' : JOptionPane.showMessageDialog(null ,num1 + " + " + num2 + " = " + (num1+num2));
break;

case 'A' : JOptionPane.showMessageDialog(null ,num1 + " + " + num2 + " = " + (num1+num2));
break;

case 'm' : JOptionPane.showMessageDialog(null ,num1 + " * " + num2 + " = " + (num1*num2));
break;

case 'M' : JOptionPane.showMessageDialog(null ,num1 + " * " + num2 + " = " + (num1*num2));
break;

default : JOptionPane.showMessageDialog (null,"Unknown command, sorry!\n");

if there is a way.. i'm dying to know :|

TNX!

[KevinWorkman]

Just let the case fall through:

case 'A':
case 'a':
//whatever
break;

This is covered in the basic switch tutorial, which is the first hit for googling "java switch": The switch Statement (The Java™ Tutorials > Learning the Java Language > Language Basics)

[JosAH]

You can label more than one case label to a sequence of statements:

[code]

switch (user_choice.charAt(0)) {
case 'A':
case 'a': JOptionPane.showMessageDialog(null ,num1 + " + " + num2 + " = " + (num1+num2));
	break;

case 'M':
case 'm': JOptionPane.showMessageDialog(null ,num1 + " * " + num2 + " = " + (num1*num2));
	break;
// etc.

kind regards,

Jos

edit: I'm the slowest old sod again ...

[Mapisto]

Oh,
Great idea!

It's funny he hasn't showed us that in class... well.. that's academy.. u should learn 90% of the stuff urself.................. (or in forums xD)

Thank you both!!

[Junky]

u should learn 90% of the stuff urself..................

Unlike spelling and grammar which is taught in school.