SWITCH STATEMENT IN JAVA | AMAN TRIPATHI

Описание: The switch statement allows us to execute a block of code among many alternatives.

The syntax of the switch statement in Java is:
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.

If expression matches with value1, the code of case value1 are executed. Similarly, the code of case value2 is executed if expression matches with value2.
If there is no match, the code of the default case is executed.
Note: The working of the switch-case statement is similar to the Java if...else...if ladder. However, the syntax of the switch statement is cleaner and much easier to read and write.

// Java Program to check the size
// using the switch...case statement

class Main {
public static void main(String[] args) {

int number = 44;
String size;

// switch statement to check size
switch (number) {

case 29:
size = "Small";
break;

case 42:
size = "Medium";
break;

// match the value of week
case 44:
size = "Large";
break;

case 48:
size = "Extra Large";
break;

default:
size = "Unknown";
break;

}
System.out.println("Size: " + size);
}
}
Output:

Size: Large
In the above example, we have used the switch statement to find the size. Here, we have a variable number. The variable is compared with the value of each case statement.

Since the value matches with 44, the code of case 44 is executed.

size = "Large";
break;
Here, the size variable is assigned with the value Large.

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