Java 21 Features

07 Oct 2023

String Templates (Preview Feature)

String Templates allow us to embed expressions (variables, methods or fields) into Strings, which are evaluated at runtime.
```
 private static String name = "T2P";
  private static String message = STR."Greetings from \{name}!";	//Greetings from T2P!
```
Virtual Threads

Virtual Threads are JVM managed lightweight threads. Lighter than the traditional Threads.
```
Executors.newVirtualThreadPerTaskExecutor();
```
Sequenced Collections

New interface Sequenced Collection is introduced in the Collections framework which provides new functionality of defined encounter order, which means, we will have a well-defined order for first element, second element, upto the last element.
```
  List<Integer> integerList = new ArrayList<>();
  integerList.add(100); //[100]
	
  integerList.addFirst(50); //[50,100]
  integerList.addLast(150); //[50,100,150]
	
  integerList.getFirst(); //50
  integerList.getLast(); //150
```

programming java