Switch case java loop11/23/2023 ![]() ![]() (I understand there may be some errors in my code, but I have only really just begun Java. At the moment the program asks the user once and then it is finished, however I want the user to be able to input as many animals as they'd like and get appropriate responses. The user inputs a given animal and the system outputs the necessary noise that relates to the animal. Related Java enum contentĪs I finish up my Java enum series, here’s a collection of the Java enum tutorials I’ve written.I've been playing around with basic Java and begun to create a project which includes a user input, system output ad a switch/case statement too. 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). They are also used to come out of the switch block once the matching case has been. I hope this Java enum switch statement example has been helpful. For loop inside the Switch-Case - Java Ask Question Asked 1 year, 10 months ago Modified 1 year, 10 months ago Viewed 122 times 0 I want to determine some port writings for area1, area2, and so on. They can be used to terminate for loops, while loops and do-while loops. 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 Using switch statements in a while loop Ask Question Asked 7 years, 11 months ago Modified 7 years, 11 months ago Viewed 60k times 0 I'm trying to use switch statements in a while loop in Java, but there is something going wrong. loop through the enum values, calling the WHILE Loop A while loop in java programming repeatedly executes a target statement as long as a given condition is true. The default case can be used for performing a task when none of the cases is true. * A Java enum switch statement (switch/case) example. A switch statement can have an optional default case, which must appear at the end of the switch. Let’s take a look at the Java source code for my enum example, and then I’ll describe it afterwards: Based on the context, it looks like n and q should respectively be named productNumber and productQuantity. Saving a few keystrokes is not worth it if your readers cannot understand your code. 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. 2 Answers Sorted by: 4 Prefer not to use single characters as variable names (except for simple loop counters). 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. ![]() The switch statement evaluates its expression, then executes all statements that follow the matching case label. In this enum tutorial, I want to just focus on using an enum in a switch statement. A statement in the switch block can be labeled with one or more case or default labels. 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? ![]()
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