SwitchDemoFallThrough shows statements in a switch block that fall through. The break statements are necessary because without them, statements in switch blocks fall through: All statements after the matching case label are executed in sequence, regardless of the expression of subsequent case labels, until a break statement is encountered. Control flow continues with the first statement following the switch block. Each break statement terminates the enclosing switch statement. Here’s how you’d refactor the previous code to make use of this new switch form: Copy code snippet. An if-then-else statement can test expressions based on ranges of values or conditions, whereas a switch statement tests expressions based only on a single integer, enumerated value, or String object.Īnother point of interest is the break statement. Now in Java 12 (with -enable-preview activated), there’s a new syntax for switch that has no fall through and, as a result, can help reduce the scope for bugs. You could also display the name of the month with if-then-else statements:ĭeciding whether to use if-then-else statements or a switch statement is based on readability and the expression that the statement is testing. The switch statement evaluates its expression, then executes all statements that follow the matching case label. The given expression can be of a primitive data type such as int, char, short, byte, and char. ![]() Based on the value of the expression given, different parts of code can be executed quickly. A statement in the switch block can be labeled with one or more case or default labels. The switch statement or switch case in java is a multi-way branch statement. It also works with enumerated types (discussed in Enum Types), the String class, and. ![]() The body of a switch statement is known as a switch block. A switch works with the byte, short, char, and int primitive data types. ![]() In this case, August is printed to standard output.
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