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- Lambda Expressions. Lambda Expression basically expresses an instance of the functional interface, in other words, you can say it provides a clear and concise way to represent a method of the functional interface using an expression.
- Functional Interfaces. An interface that contains only one abstract method is known as a functional interface, but there is no restriction, you can have n number of default and static methods inside a functional interface.
- Method Reference. Method reference is a shorthand notation of a lambda expression to call a method. There are four types of method references that are as follows
- Streams. Stream API is introduced in Java 8 and is used to process collections of objects with the functional style of coding using the lambda expression.
- Java 8 Programming Language Enhancements
- Lambda Expressions
- Method References
- Functional Interface
- Optional
- Foreach
- Date/Time API
- Default Methods
- Nashorn Javascript Engine
- StringJoiner
Java 8 provides following features for Java Programming: 1. Lambda expressions, 2. Method references, 3. Functional interfaces, 4. Stream API, 5. Default methods, 6. Base64 Encode Decode, 7. Static methods in interface, 8. Optional class, 9. Collectors class, 10. ForEach() method, 11. Nashorn JavaScript Engine, 12. Parallel Array Sorting, 13. Type ...
Lambda expression helps us to write our code in functional style. It provides a clear and concise way to implement SAM interface(Single Abstract Method) by using an expression. It is very useful in collection library in which it helps to iterate, filter and extract data. For more information and examples: click here
Java 8 Method reference is used to refer method of functional interface . It is compact and easy form of lambda expression. Each time when you are using lambda expression to just referring a method, you can replace your lambda expression with method reference. For more information and examples: click here
An Interface that contains only one abstract method is known as functional interface. It can have any number of default and static methods. It can also declare methods of object class. Functional interfaces are also known as Single Abstract Method Interfaces (SAM Interfaces). For more information and examples: click here
Java introduced a new class Optional in Java 8. It is a public final class which is used to deal with NullPointerException in Java application. We must import java.utilpackage to use this class. It provides methods to check the presence of value for particular variable. For more information and examples: click here
Java provides a new method forEach() to iterate the elements. It is defined in Iterable and Stream interfaces. It is a default method defined in the Iterable interface. Collection classes which extends Iterable interface can use forEach() method to iterate elements. This method takes a single parameter which is a functional interface. So, you can p...
Java has introduced a new Date and Time API since Java 8. The java.time package contains Java 8 Date and Time classes. For more information and examples: click here
Java provides a facility to create default methods inside the interface. Methods which are defined inside the interface and tagged with default keyword are known as default methods. These methods are non-abstract methods and can have method body. For more information and examples: click here
Nashorn is a JavaScript engine. It is used to execute JavaScript code dynamically at JVM (Java Virtual Machine). Java provides a command-line tool jjswhich is used to execute JavaScript code. You can execute JavaScript code by two ways: 1. Using jjs command-line tool, and 2. By embedding into Java source code. For more information and examples: cli...
Java added a new final class StringJoiner in java.util package. It is used to construct a sequence of characters separated by a delimiter. Now, you can create string by passing delimiters like comma(,), hyphen(-) etc. For more information and examples: click here
- Java 8 Main Features.
- Java 8 Predefined Functional Interfaces Examples.
- Java 8 Stream API Examples. Java 8 Stream Tutorial for Beginners. Java 8 Stream - Creating Stream Objects Example. Java 8 Stream - filter() and forEach() Example.
- Java 8 Coding Examples. Factory Pattern Using Java 8 Lambda Expressions. Java 8 - Merging Two Maps Example. Java 8 Convert List to Map Example. Guide to Java 8 forEach Method.
- Functional Interfaces And Lambda Expressions. In Java 8, a new notion called functional interfaces was introduced. A Functional Interface is an interface that has exactly one abstract method.
- forEach() Method In Iterable Interface. In Java 8, the Java.lang interface now supports a “forEach” function. Iterable that can iterate over the collection’s items.
- Optional Class. In Java 8, the “java.util” package included an optional class. The public final class “Optional” is used to handle NullPointerException in a Java program.
- Default And Static Methods In Interfaces. In Java 8, you may add non-abstract methods to interfaces, allowing you to create interfaces with method implementation.
- Lambda Expressions. In the most basic terms, Lambda expressions can be defined as blocks of code that take parameters and return values. It is used to write code in a functional style.
- Functional Interface. Functional interface is one of the important Java 8 Features. An interface that carries a single abstract method is called a functional interface.
- forEach() Method. The forEach() method is the default method in the iterable interface. This method receives one parameter, which is a functional interface.
- Default method. Default methods are present inside the interface and associated with a default keyword. Default methods are non-abstract methods used to define a method with the default implementation.
Aug 3, 2022 · Some of the important Java 8 features are; forEach() method in Iterable interface; default and static methods in Interfaces; Functional Interfaces and Lambda Expressions; Java Stream API for Bulk Data Operations on Collections; Java Time API; Collection API improvements; Concurrency API improvements; Java IO improvements; Let’s have a brief ...
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Sep 10, 2023 · With a host of new features and enhancements, Java 8 revolutionized the way developers write code, making it more expressive, efficient, and user-friendly. In this comprehensive guide, we...
