Switch case java 17

The switch statement in Java is a multi-way branch statement. In simple words, the Java switch statement executes one statement from multiple conditions.

It is an alternative to an if-else-if ladder statement.

It provides an easy way to dispatch execution to different parts of code based on the value of the expression. The expression can be of type , , , , , enums, , or wrapper classes (, , , ).

Note: Java switch expression must be of byte, short, int, long(with its Wrapper type), enums and string.

Beginning with JDK7, it also works with enumerated types (Enums in java), the String class, and Wrapper classes.

Syntax:

switch(expression) { case value1 : // Statements break; // break is optional case value2 : // Statements break; // break is optional ....

Switch case in java 8

.... .... default : // default Statement }

Example: Size Printer Example

Some Important Rules for Java Switch Statements

• Case values must be constants or literals and of the same type as the switch expression.
• Duplicate case values are not allowed.
• The break statement is used to exit
  how to implement switch case in java
  how to exit switch case in java