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The switch statement allows us to execute a block of code among many alternatives. Syntax: switch (expression) { case value1: // code break; case value2: // code break; ... ... default: // default statements } How does the switch-case statement work? The expression is evaluated once and compared with the values of each case.
Syntax. switch (expression) { case x: // code block break; case y: // code block break; default: // code block } This is how it works: The switch expression is evaluated once. The value of the expression is compared with the values of each case. If there is a match, the associated block of code is executed.
11 wrz 2022 · 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. The syntax of Switch case statement looks like this –. switch (variable or an integer expression) { case constant: //Java code ; case constant: //Java code ; default: //Java code ; }
2 sie 2024 · To use switch statement in Java, you can use the following syntax: switch (expression) { case value1: // code to execute if expression equals value1 break; case value2: // code to execute if expression equals value2 break; // … more cases default: // code to execute if none of the above cases match}
The switch statement checks the value of number. Since number is 6, it matches the case labeled 6: (i.e., case 6:). The program then executes the code inside this case, which is System.out.println ("It's Friday!"); This line of code prints the message "It's Friday!" to the console.
Syntax: switch (expression) { case value1: // code to be executed if expression equals value1 break; case value2: // code to be executed if expression equals value2 break; // you can have any number of case statements default: // code to be executed if expression doesn't match any case . }
A switch works with the byte, short, char, and int primitive data types. It also works with enumerated types (discussed in Enum Types), the String class, and a few special classes that wrap certain primitive types: Character, Byte, Short, and Integer (discussed in Numbers and Strings).
