Java Case or Switch Example

How do you use the CASE function in Java?

The Switch or Case function in Java is useful for branching off to different actions based on a conditional expression. For example if you have a series of categories that can be selected and depending on which category was selected, you want the program to do a different action, the Case function is the best way to do this.

Here is the syntax

    switch( expression ) {
       case value1:
           statement1;
           break;
       case value2:
           statement2;
           break;
       case value3:
           statement3;
           break;
       ...
       case valuen:
           statement n;
           break;
       default:
           statements;
   }

A real example of this from the Sun website:

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