Value Switch

The value switch is supported.

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);

Expression Switch

Java does not support expression switch, you should use the if then else construct for this purpose.

Constant expression required

In a constant expression, you need to use a primitive type. Ie int in place of integer

Example in a function:

private String[] parseCommand(String code) {

	// final Integer defaultState = 1; // Not good
	final int defaultState = 1; // Good

	Integer state = defaultState;
	for (byte b : code.getBytes()){
		switch (state) {
			case defaultState:
				break;
		}
	}
	
	return new String[0];
}