In the above article, we have mentioned almost all the scenarios of the switch statements and the outputs that they can generate. When there is no default block in the switch block ("Value matched - w, not a vowel") case 'o': When there is a missing break keyword in Case statements ("Sorry either the value you have given is invalid or not matched with any of the case.") When no value is matched with the Switch expression ("Sorry none of your cases matched") break ("Congratulations here is the case 8 executed") break ("Congratulations here is the case 4 executed") break ("Congratulations here is the case 3 executed") break When the value of the Switch expression is matched with a Case value The below examples clearly show how the Case statement work in Java.
#JAVA SWITCH CODE#
return ‘true’ in any of the Case statements, then the code of a particular block is executed, and then execution exits the Switch block. If the value of any case is matched with the expression, i.e. false’ is returned at the end of every case, then the code inside the ‘default’ is executed. If the value is not matched until the last step, i.e. It shows how matching the expression defined in the Switch statement is matched with the Case value starting from the top until the last steps. The above flow diagram clearly shows how the Switch and Case statement works in Java.
default is an optional case and executed if none of the case values matches the expression There can be as many Cases as the user wants in a Switch block same data type for switch expression and case value Case value1: Beak and default keywords are optional in Switch blocks.If the break is not used in any case statements, then there would be no error instead, all the cases proceeding with the matching case will be executed. Break keyword in each Case is used to terminate that particular sequence of statements of that case.Variables are not allowed for the Case value.The data type of variable of switch statement needs to be the same as the Case statement value.Duplicate values in the Case statements are not allowed.There can be any number of Case statements in a single Switch block.There can be multiple switch blocks in the program, depending on the different conditions.If none of the value matches case values, then the default statement defined in the Switch block is executed otherwise, nothing got executed.
#JAVA SWITCH SOFTWARE#
Web development, programming languages, Software testing & others How Does Case Statement work in Java?Īs described above, Case in a particular Switch statement is executed when the value of the expression matches with the Case value.
#JAVA SWITCH FREE#
Start Your Free Software Development Course Though the default and break keywords are not mandatory in Switch-Case statements. If any of the values of the Case does not match with the expression, then the default statement is executed. With the Java JDK7, the value of the case can also be String, Wrapper and enumerated types. The Case values in Java can be byte, int, short, byte data types. It performs the execution of statement/statements when the value of the expression is matched with the case value, and the code of the particular statements is ended by break keyword. The case is a keyword that is used with the Switch statement. The switch statement is a branch statement. To handle such situations in Java, Switch-Case statements are used for the ease of programmer and reduce code line and complexity. But what if there are ‘n’ number of scenarios that need separate actions on each condition? Multiple if and else-if statements at this point can cause confusion to the programmer at some point in the code as it involves multiple braces and a set of statements for each condition.
Though in Java and many other programming languages, statements like if-else, if-else-if are used in various conditions. While programming, it is very difficult to handle dealing with different actions on different conditions.
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