Switch Case In Java Example Programs

Hence it matches the case 4.

Switch case in java example programs. The switch case statement in java in java programming language the switch is a decision making statement that evaluates its expression. What is switch case in java. Here we have a variable week that holds an integer value. Using a switch case in java optimizes the readability of the code while working on multiple test expressions.

It may also contain a default label. The switch block which is the body of switch statement may contain one or more case labeled statements. This is how the switch statement in java works. Hustle free logic building using the switch case results in improved efficiency.

The value is compared to each case inside the switch block. Similarly switch in java is a type of conditional statement that activates only the matching condition out of the given input. 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. So the statement inside case 4 is executed.

You could also display the name of the month with if then else statements. 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 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. The case statement should be string literal.

This is called a nested switch. The switch statement evaluates its expression then executes all statements that follow the matching case label. 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. Since a switch statement defines its own block no conflicts arise between the case constants in the inner switch and those in the outer switch.

In this case august is printed to standard output. You can have any number of case statements within a switch. Java programming language has conditional and control statements which optimizes the logic while writing a program. We can use a switch as part of the statement sequence of an outer switch.

In the above example we have used the switch statement to find out the day of a week. 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. Java allows us to use strings in switch expression since java se 7. Nested switch case statements.

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.