Switch statement and its use scenario

To review some of the features of switch statement in Java, which is part of the Java foundamental concept, I am writing this article. Also I will introduce it's enhanced statement after Java12.

The basics of a switch statement consist of the following:

• switch: the statement.
• case: how many cases to meet the requirement.
• execution: the behavior for each specific case.
• break: stop the loop; this includes the case and the default.
• default: when not meeting the above requirement, the execution of the behavior.

Traditional switch

Syntax

switch (val) {
case w:
	execution;
	break;
case x: case: y: case: z
	execution;
	break;
default:
	execution;
	break;
}

Example

int intTraditionalValue = 1;
        switch (intTraditionalValue) {
            case 1:
                System.out.println("1");
                break;
            case 2:
                System.out.println("2");
                break;
            case 3: case 4: case 5:
                System.out.println(intTraditionalValue);
                break;
            default:
                System.out.println("none");
                break;
        }
        // none

Used with method and return statement

Sometimes it goes with method and return statement, and executed in main method.

//main
String month = "April";
String quarter = getQuarter(month);
        System.out.println("Quarter for " + month + ": " + quarter);
// Quarter for April: second Q

public static String getQuarter(String month) {
        switch (month) {
            case "January":
            case "February":
            case "March":
                return "first Q";
            case "April":
            case "May":
            case "June":
                return "second Q";
            case "July":
            case "August":
            case "September":
                return "third Q";
            case "October":
            case "November":
            case "December":
                return "fourth Q";
            default:
                return "Invalid month";
        }

Enhanced Swicth Statement

Omit break, simplify statement, this function appeared after Java 13.

Syntax

switch(val) {

case w → 

case x, y, z →{}

default → n

}

Example

int intValue = 6;
        switch(intValue) {
            case 1 -> System.out.println("1");
            case 2 -> System.out.println("2");
            case 3, 4, 5 -> {
                System.out.println(intValue);
            }
            default -> System.out.println("none");
        }

I think that's it.