Java switch expression

/**
 * @author lautturi.com 
 * Java example: java expression in switch case 
 */

import java.util.*;

public class Lautturi {
	private static final int MONDAY = 1;
	private static final int TUESDAY = 2;
	private static final int WEDNESDAY = 3;
	private static final int THURSDAY = 4;
	private static final int FRIDAY = 5;
	private static final int SATURDAY = 6;
	private static final int SUNDAY = 7;

	public static void main(String[] args) {

		int day = 3;
		System.out.println(switch (day) {
		case MONDAY, TUESDAY -> 1;
		case WEDNESDAY,THURSDAY -> 1.2;
		case FRIDAY, SATURDAY -> 1.5;
		case SUNDAY -> 2;
		default -> throw new IllegalStateException("Invalid day: " + day);
		});

	}
}

output:

1.2