Streamline your Java code with the power of Java Stream API
Anubhi Sharma
Java Developer | Core Java | J2EE | Springboot | JavaScript | postgreSQL | Apache Camel | SoapUI
Java Stream API is a powerful tool that allows developers to perform efficient and concise operations on collections, arrays, and other data sources. It was introduced in Java 8 and has since become an integral part of modern Java programming.
What is the Java Stream API?
The Java Stream API is a sequence of elements that can be processed in parallel or sequentially. It provides a functional programming model for processing collections, arrays, and other data sources. Streams allow developers to perform complex operations on data sources with ease, without the need for complex loops and conditional statements.
A stream pipeline consists of three main parts: a source, intermediate operations, and a terminal operation. The original can be any collection, array, or other data source. Medium operations transform the elements of the stream into another stream, and a terminal operation produces a result or side effect.
Benefits of the Java Stream API
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Usage of the Java Stream API
Let's look at an example of how to use the Java Stream API to filter a collection of strings:
List<String> names = Arrays.asList("John", "Jane", "Adam", "Eve")
List<String> filteredNames = names.stream()
????????????????.filter(name -> name.startsWith("J"))
????????????????.collect(Collectors.toList());
In the example above, we first create a List of strings called "names". We then create a stream from this list using the stream() method. We then apply an intermediate operation filter() to the stream, which filters out any names that do not start with the letter "J". Finally, we collect the filtered elements into a new List using the collect() method.
This example demonstrates how easy it is to use the Java Stream API to filter a collection of strings. The same operation using traditional loops and conditional statements would be much more verbose and harder to read.
The Java Stream API provides a powerful and efficient way to process collections, arrays, and other data sources. With its concise and readable syntax, lazy evaluation, and improved error handling, the Stream API has become an integral part of modern Java programming. By mastering the Java Stream API, developers can write code that is more efficient, more concise, and easier to maintain.
Software Engineer @ PayU | CSE @ 2022 | Microservices | Java | Testing | AWS | Docker | MySql | System design
8 个月It will be nice to also add examples showcasing the benefits of streams
Principal Consultant | BFSI |AWS Certified Solutions Architect|Core Java | J2EE | Spring Boot| Microservice | Elasticsearch | Redis | Kafka | OAuth2 | DevOps | AWS Cloud | Kubernetes | Certified ACTICO | Security Audit
2 年That is so significant