#Java switch case example how to#
#Java switch case example code#

I'll also help you figure out if they're a good option to use in your code. In this article, I'll explain what switch statements are and how they work. Take a look at the example below – instead of using this long if else statement, you might choose to go with an easier to read switch statement. Switch statements can have a cleaner syntax over complicated if else statements. Related Java enum contentĪs I finish up my Java enum series, here’s a collection of the Java enum tutorials I’ve written.There are times in JavaScript where you might consider using a switch statement instead of an if else statement.

#Java switch case example how to#

Between my original Java enum tutorial and this tutorial, I hope it helps to see at least two examples of how to use a custom enum type with a switch statement (sometimes called a case statement). Java Switch case uses String. Java switch case String is case sensitive, the output of example confirms it.

#Java switch case example code#

I hope this Java enum switch statement example has been helpful. Java switch case String make code more readable by removing the multiple if-else-if chained conditions. If a calling program manages to somehow call this method with a different Day value - something which should be really hard to do, unless I add a new value to the Day enum - flow of control will fall down to the default expression.

For the values MONDAY through THURSDAY I print one String for FRIDAY I print a different string and SATURDAY and SUNDAY print their own string. The printTodaysThought method takes one Day value ( theDay), and compares that variable against the constants that are shown in the switch statement. That’s really the only “trick” in this code the rest of it is a standard Java 5 for loop, and it calls the printTodaysThought method once for each constant in the Day enum. This “enum for loop” iterates through all the values in the Day enum, using the values method that comes with Java’s enum type. Inside main I jump right in with this for loop: DiscussionĪs with any Java program, the flow of control starts in the main method. The output is in this order because the enum begins on SUNDAY, and goes in order from there until SATURDAY. When you compile and run this code, the output looks like this: Public static void printTodaysThought(Day theDay)Ĭase THURSDAY: ('Working for the man :)') Ĭase FRIDAY: ('TGIF ') Ĭase SUNDAY: ('Ahh, the weekend. a method that prints a String corresponding to the day value loop through the enum values, calling the * A Java enum switch statement (switch/case) example. Let’s take a look at the Java source code for my enum example, and then I’ll describe it afterwards: Then in the main portion of the program, I refer to that enum, both in my main method, and in the “print” method that I call from the main method. SUNDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY In this enum/switch example, I first declare an enum type that looks like this: Hopefully this enum/switch example adds a little more complexity to my earlier examples. In this enum tutorial, I want to just focus on using an enum in a switch statement. In my earlier Java enum examples tutorial, I demonstrated how to declare a simple Java enum, and then how to use an enum with a variety of Java constructs, including a Java switch statement, a for loop, and an if/then statement. Java enum FAQ: Can you share a Java enum switch example, i.e., how to use an enum with a Java switch statement? Use string in switch case in java Ask Question Asked 11 years, 2 months ago Modified 5 years, 1 month ago Viewed 354k times 60 I need to change the following if 's to a switch - case while checking for a String, to improve the cyclomatic complexity.