🟣 “Switch it up with Primitive Patterns!”
Explanation: Enhanced primitive type patterns in instanceof and switch statements make type checks and pattern matching more powerful and concise.
Code Sample:
switch (obj) {
case Integer i -〉 System.out.println("Integer: " + i);
case Double d -〉 System.out.println("Double: " + d);
default -〉 System.out.println("Unknown type");
}
🟣 “Constructors with Flexibility!”
Explanation: Flexible constructor bodies allow more expressive and flexible initialization logic.
Code Sample:
public class Example {
private final int value;
public Example(int value) {
if (value 〈 0) throw new IllegalArgumentException("Value must be positive");
super(value); // Can call superclass constructor after validations
this.value = value;
}
}
🟣 “Modules Made Simple!”
Explanation: Simplified module imports streamline the process of importing modules, making code cleaner and easier to manage.
Code Sample:
import module java.base;
import module my.custom.module;
🟣 “Concurrency, Structured and Secure!”
Explanation: Structured concurrency simplifies concurrent programming by managing multiple tasks in a structured way.
Code Sample:
try (var scope = new StructuredTaskScope.ShutdownOnFailure()) {
Future〈String〉 future1 = scope.fork(() -〉 task1());
Future〈String〉 future2 = scope.fork(() -〉 task2());
scope.join();
scope.throwIfFailed();
System.out.println(future1.resultNow() + future2.resultNow());
}
🟣 “Class-File API: Updated and Upgraded!”
Explanation: The updated class-file API provides more capabilities for manipulating Java class files programmatically.
Code Sample:
ClassFile cf = ClassFile.read(new FileInputStream("Example.class"));
cf.addMethod(new Method("newMethod", "()V", ACC_PUBLIC));
cf.write(new FileOutputStream("Example.class"));
🟣 “Stream Gatherers: Collecting Made Easy!”
Explanation: Stream gatherers enhance the Stream API, making it easier to collect and process data streams.
Code Sample:
List〈String〉 result = Stream.of("a", "b", "c")
.collect(Collectors.gathering());
🟣 “Markdown in JavaDoc: Document with Style!”
Explanation: Markdown documentation comments allow developers to write more readable and stylish documentation.
Code Sample:
/**
* # Example
* This is an example of using **Markdown** in JavaDoc.
*/
public class Example { }
🟣 “Scoped Values: Safe and Sound!”
Explanation: Scoped values provide a way to share immutable data within a thread and its child threads, improving safety and performance.
Code Sample:
ScopedValue〈String〉 user = ScopedValue.newInstance();
ScopedValue.where(user, "Alice", () -〉 {
System.out.println("User: " + user.get());
});