Switch Case In Java Example Programs With User Input

The body of a switch statement is known as a switch block a statement in the switch block can be labeled with one or more case or default labels.

Switch case in java example programs with user input. The following rules apply to a switch statement the variable used in a switch statement can only be integers convertable integers byte short char strings and enums. The switch statement evaluates its expression then executes all statements that follow the matching case label. Let us consider the example of a program where the user gives input as a numeric value only 1 digit in this example and the output should be the number of words. The syntax of switch case statement looks like this switch variable or an integer expression case constant.

In this case august is printed to standard output. Java programming language has conditional and control statements which optimizes the logic while writing a program. Java switch statement with concepts and examples of switch statement in java java switch string java switch statement programs and example difference between java if else if and switch. The scanner class is used to get user input and it is found in the java util package.

Here we have a variable week that holds an integer value. In our example we will use the nextline method which is used to read strings. Hustle free logic building using the switch case results in improved efficiency. What is switch case in java.

Java examples in this program we are making a simple calculator that performs addition subtraction multiplication and division based on the user input. Hence it matches the case 4. Java tutorial java home java intro java get started java syntax java comments java variables java data types java type casting java operators java strings java math java booleans java if else java switch java while loop java for loop java break continue java arrays java methods java methods java method parameters java method overloading java. So the statement inside case 4 is executed.

To use the scanner class create an object of the class and use any of the available methods found in the scanner class documentation. Java program to make a calculator using switch case by chaitanya singh filed under. Similarly switch in java is a type of conditional statement that activates only the matching condition out of the given input. The case statement should be string literal.

You can have any number of case statements within a switch. Using a switch case in java optimizes the readability of the code while working on multiple test expressions. Switch case statement is used when we have number of options or choices and we may need to perform a different task for each choice. In the above example we have used the switch statement to find out the day of a week.

Java allows us to use strings in switch expression since java se 7. Here the value of week is 4.