Then we encounter the break statement which takes us out of the switch.Īnd finally, after coming out of the switch statement we get the "End of program." output. Java 17 : Switch Statement / Expression : Java 17 LTS is the latest long-term support release for the Java SE platform and it was released on September 15, 2021. Since case 3: is a match so, we execute its code and we get "It's three!" as output. The value num is matched with case 1: and it fails so, we move to the next case case 2: which also fails so, we move to case 3: and it is a match. Note! The break statement in the default is optional. When the variable is equal to one of the cases, the statements. In the following example we will print the name of the number. A switch case is used test variable equality for a list of values, where each value is a case. They are also called case labels.Įach block consists of one or more statements.īreak statement marks the end of a particular block and takes us out of the switch statement.Įxample #1: Write a program in Java to print result using switch case Compilation of switch statements uses the tableswitch and lookupswitch instructions. and so on are constants or expressions that evaluates to an integer contants. The switch expression is an integer expression or characters. If no match is found and if the default block exists then, we execute the code of the default block. If a match is found then the code of that case is executed. The Java Switch Case statement is one of the selection type statements in Java, similar to the if else statement. The switch statement executes one or several code blocks, similar to the else if statement, depending on which of its so-called case statements are true. Each case block is followed by the value of the case and a. We use the switch statement to tests the value or expression against a list of case values. There is no limit to the number of cases in a switch case block. Switch case statements are similar to the if else statement that we discussed in the previous tutorial. In this tutorial we will learn about switch case statement in Java programming language. RobertHarvey 'its already clear to any competent Java programmer that, if a case is not present in the switch, then it simply does nothing' This can also mean that someone introduced new enum constant and forgot to adjust corresponding switch statements to handle the new case. The switch statement is a control flow statement used in Java, which means that it determines the flow of program execution.
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