Java 12 – Switch expressions
Java 12 JEP 325 Extend switch so it can be used as either a statement or an expression, and so that both forms can use either traditional case … : labels (with fall through) or new case … -> labels
Example (traditional approach using : operator)
public class SwitchTest {
public static void main(String[] args) {
String day="SUN";
switch(day)
{
case "MON":
System.out.println("Working day");
break;
case "TUE":
System.out.println("Working day");
break;
case "WED":
System.out.println("Working day");
break;
case "THU":
System.out.println("Working day");
break;
case "FRI":
System.out.println("Working day");
break;
case "SAT":
System.out.println("Half Working day");
break;
case "SUN":
System.out.println("Holiday day");
break;
default:
System.out.println("Invalid day");
}
}
}Example using Java 12 expression (->)
public class SwitchTest {
public static void main(String[] args) {
String day="SUN";
switch(day)
{
case "MON","TUE","WED","THU", "FRI" -> System.out.println("Working day");
case "SAT"-> System.out.println("Half Working day");
case "SUN"-> System.out.println("Holiday day");
default-> System.out.println("Invalid day");
};
}
}