Java 9 CompletableFuture API improvements – delayedExecutor
Java 9 introduces a couple of improvements in CompletableFuture API. Today let’s take a look at new delayedExecutor static method.
Java 9 CompletableFuture API improvements – orTimeout
One of the improvements in Java 9 CompletableFuture is the orTimeout method:
CompletableFuture orTimeout(long timeout, TimeUnit unit)
Java 9 Diamond Operator with Anonymous Inner Classes
Diamond operator ‘<>’ was introduced in Java 7 to make instantiation of generic classes easier.
Java 9 Using effectively-final variables in the try-with-resources
In Java 9 try-with-resources statement has been improved. Now if you already have final or effectively final resource you can use it in try-with-resources statement without need to declare a dummy variable.
Java 9 Disallowed underscore [ _ ] as a one-character identifier
Before Java 9 we could have underscore [ _ ] as a one character identifier.
Java 9 private interface methods
In Java SE 9 interfaces can have private and private static methods.
Understanding the difference between Binary and text files using Java.
Understanding the difference between Binary and Text Files
Java 9 Convenience Factory Methods for Collections
Java 9 enhances the java collections and provides static methods for creating small immutable collection instances.
Java 8 Comparator
On java 8 Comparator interface there are new default methods using which compare objects in declarative way.
Java 8 streams collector groupingBy
Suppose we have a List of strings and want to group them by length.
We can use Collectors.groupingBy() for this task.