The introduction of Java 8 brought about significant changes to the way we write code. Two of the most impactful features added to this new version are lambda functions and streams. In this article, we will explore how these two features have simplified the way we handle data manipulation.

One of the primary issues with traditional coding is the problem of nested conditionals. This can lead to messy and convoluted code that is difficult to read and maintain. With the use of method chaining, this problem is easily overcome. By utilizing lambda functions, you can write concise and efficient code that is free from the clutter of nested statements.

For example, let's say we have a list of grades and we want to filter out all the fail grades and those that are not in the Science subject. With Java 7, this would involve writing complex code with multiple conditionals. However, with Java 8's streams feature, we can achieve this in just two lines of code.

The first step is to convert our list of grades into a stream using the `stream()` method. This produces a stream of Grades containing all the elements from our original list. We can then use the `filter()` method to filter out any grades that do not meet certain conditions.

In this example, we are filtering out fail grades and those that are not in the Science subject. The lambda function passed to the `filter()` method checks if the score is above the fail threshold and if the subject is Science.

Finally, we can use the `collect()` method to collect our filtered stream into a list or any other desired data structure. This produces an end result that is easy to work with and understand.

The benefits of using streams in Java 8 are numerous. Not only do they simplify complex code, but they also make it easier to write parallelizable code. This means that we can take advantage of multi-core processors to improve the performance of our applications.

In conclusion, Java 8's introduction of lambda functions and streams has revolutionized the way we write code in Java. These features have simplified data manipulation, improved readability, and made it easier to write efficient and parallelizable code. Whether you are working on a small project or a large enterprise application, these features are essential tools that every Java developer should know how to use.

Streams in java 8