Gain insights into Java 8's new features: lambdas, Stream API, Functional Interfaces, Collections improvements, Memory Management, and Date & Time API to enhance productivity and code quality.

Java 8 has introduced a ton of features and enhancements to boost developer productivity, while making your code faster, more concise, and more readable. 
In this course, you will learn about lambdas, Java Stream API, Functional Interfaces, as well as lots of other new improvements related to Collections, Memory Management, Date & Time API. 
After completing this course, you’ll be well versed in all the functionality of Java 8 and be ready to utilize these new features in your own code.

Java 8 for Experienced Developers: Lambdas, Stream API & Beyond

In the previous lesson, we used the `thenCombine()` and `thenCompose()` methods to combine the result of two futures. 

If we need to run multiple futures in parallel and combine their result then we can use the `allOf()` and `anyOf()` methods.

## 1) `allOf()`

Here are a few important points regarding `allOf()` method:

1. It returns a new CompletableFuture that is completed when all of the given CompletableFutures are completed. 
2. If any of the given CompletableFutures complete exceptionally, the returned CompletableFuture also completes, with a CompletionException holding this exception as its cause. 

3. The results, if any, of the given CompletableFutures are not reflected in the returned CompletableFuture, but they may be obtained by inspecting them individually.
4. If no CompletableFutures are provided, it returns a CompletableFuture completed with the value null. 

In the previous lesson, we used the `thenCombine()` and `thenCompose()` methods to combine the result of two futures. 

If we need to run multiple futures in parallel and combine their result then we can use the `allOf()` and `anyOf()` methods.

# 1) `allOf()`

Here are a few important points regarding `allOf()` method:

1. It returns a new CompletableFuture that is completed when all of the given CompletableFutures are completed. 
2. If any of the given CompletableFutures complete exceptionally, the returned CompletableFuture also completes, with a CompletionException holding this exception as its cause. 

3. The results, if any, of the given CompletableFutures are not reflected in the returned CompletableFuture, but they may be obtained by inspecting them individually.
4. If no CompletableFutures are provided, it returns a CompletableFuture completed with the value null. 

This lesson explains how we can combine the results of an arbitrary number of futures together.

Let's Begin

Taste of lambdas

Stream API

Java 8 Collections Improvements

Java 8 Concurrency API Improvements

Java Time API

Conclusion

CompletableFuture: Combining Results of Futures

1) `allOf()`