![]() ![]() SwitchDemoFallThrough shows statements in a switch block that fall through. In computer programming languages, a switch statement is a type of selection control mechanism used to allow the value of a variable or expression to change. The Java switch statement executes one statement from multiple conditions. 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. By contrast, execution within a SWITCH statement falls through to the next statement. ![]() 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. Execution exits the CASE statement at the end of the matching statement. 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. This will stop the execution of more code and case testing inside the block. ![]() It provides an easy way to dispatch execution to different parts of code based on the value of the expression. It is like an if-else-if ladder statement. In simple words, the Java switch statement executes one statement from multiple conditions. The switch statement evaluates its expression, then executes all statements that follow the matching case label. When Java reaches a break keyword, it breaks out of the switch block. The switch statement is a multi-way branch statement. A statement in the switch block can be labeled with one or more case or default labels. The body of a switch statement is known as a switch block. The switch statement evaluates its expression, in this case the value of month. Print week days using switch statement - Core Java Questions - switch Statement In Java: Java switch Statement provides a better multi-way branch than. You can only switch on values of a few types numeric types, enum types, and String and you can only test for exact equality against constants. In this case, August is printed to standard output. Following is a sample program, SwitchDemo (in a. Java supports multi-way comparisons with switch statements and, since Java 14, switch expressions ( JEP 361 ), but unfortunately switch is very limited. ![]()
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