Java brought quite a number of vital improvements for developers. Switch Expressions (Standard) is one of the key improvements released under JEP 361. You can download Java 14 by clicking here.
Java 14 - Switch Expressions (Standard)...!!! Click To Tweet
Check out: JAVA 13 Features with examples
JEP 361 – Switch Expressions (Standard)
If you check my article on Java 13 here. You will see that ‘Switch Expression Enhancements’ came under JEP-354 but it was a preview feature. In fact, Java 12 also had this feature as a preview. But, now from Java 14 onwards, this feature is no longer a preview but a standard feature. By standard, it means that you don’t need to specify --enable-preview option to access this feature. It’s permanent now since 14.
Just to give you a brief idea again on what this change is all about. Now, we can return a value from the switch using ‘yield’. This change was there in 13 (in preview mode) but Java 14 extended it a little by allowing to use (->) to return the values as well.
Examples:
Let’s see this example below which returns value through ‘Yield’.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | public class SwitchStatement_14_With_Yield { public static void main(String args[]) { getValue(1); } private static String getValue(int number) { String value = switch (number) { case 1: yield "Elephant"; case 2, 3: yield "Dog"; case 4: yield "Tiger"; case 5, 6, 7, 8: yield "Cat"; default: yield "No Idea"; }; return value; } } |
Let’s see this example below which returns value through ‘Yield’ and ‘Arrow’:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | public class SwitchStatement_14_With_Yield_And_Arrow { public static void main(String args[]) { getValue(1); } private static String getValue(int number) { String value = switch (number) { case 1 - > "Elephant"; case 2, 3 - > "Dog"; case 4 - > "Tiger"; case 5, 6, 7, 8 - > { yield "Cat"; } default: yield "No Idea"; }; return value; } } |
Java 14 - Switch Expressions (Standard)...!!! Click To Tweet
Other Useful References:
- What is new in Java 13
