Java 21 Features

Following are some of Java 21 LTS features

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1.String Template

Earliar we use to do concatation with string , but with this feature now we can have String Template cotaining embeded expression (evaluated at runtime). IT ay contain variable,methods,exrpession computed at runtime.

For Ex:

STR is String Template Processor which evalaute string conatining a varaible a.

2.unnamed patterns and varibales

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we can skip the variable if it will be used in future.

for ex: try {}catch(Exception e)

e is the variable which will be used only if the exception is thrown.

we can make use of above feature here. use _ , no need to use variable e for exception.

1. unnamed classes and instance method

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   wrtie a java file-demo.java without class that include only method

   demo.java

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   void main(String[]){

sysout("This method is without class name");

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4.sequencecollection : we can create sequencecollection now

5.record pattern

Virtual Threads

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Lightweight threads help to write hightly throughput concurrent applications..

below example to use virtual thread.