Lambda Expressions: An Introduction in Java 8

Lambda expressions were one of the new features that was introduced in Java 8.

They help clean up verbose code by providing a concise and local way to reduce redundancy by keeping code short and self-explanatory.

In addition to saving code, Java’s lambda expressions are important in functional programming. They allow developers to write in a functional style by acting as functions without belonging to any class.

Lambda expressions allow us to implement functional interfaces by converting them into instances of functional interfaces. This provides a reference to the function. For example, a lambda passed as a parameter is indistinguishable to calling an implemented interface method). Thus, the references are used effectively as a function type object that can be passed and called on.

#java #tech blogs #java 8 #lambda expressions in java

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How to Install OpenJDK 11 on CentOS 8

What is OpenJDK?

OpenJDk or Open Java Development Kit is a free, open-source framework of the Java Platform, Standard Edition (or Java SE). It contains the virtual machine, the Java Class Library, and the Java compiler. The difference between the Oracle OpenJDK and Oracle JDK is that OpenJDK is a source code reference point for the open-source model. Simultaneously, the Oracle JDK is a continuation or advanced model of the OpenJDK, which is not open source and requires a license to use.

In this article, we will be installing OpenJDK on Centos 8.

#tutorials #alternatives #centos #centos 8 #configuration #dnf #frameworks #java #java development kit #java ee #java environment variables #java framework #java jdk #java jre #java platform #java sdk #java se #jdk #jre #open java development kit #open source #openjdk #openjdk 11 #openjdk 8 #openjdk runtime environment

Lambda Expression in Java 8

In this blog we will understand what is the lambda expression and why we need lambda expression and how we use lambda and about the functional interface.

What is Lambda Expression :

• It is an anonymous function.
• Not having name
• No return type and no modifiers.

#functional programming #java #functional java #java #java 8 #java8 #lambda expressions in java

Lambda Expressions: An Introduction in Java 8

Lambda expressions were one of the new features that was introduced in Java 8.

They help clean up verbose code by providing a concise and local way to reduce redundancy by keeping code short and self-explanatory.

In addition to saving code, Java’s lambda expressions are important in functional programming. They allow developers to write in a functional style by acting as functions without belonging to any class.

Lambda expressions allow us to implement functional interfaces by converting them into instances of functional interfaces. This provides a reference to the function. For example, a lambda passed as a parameter is indistinguishable to calling an implemented interface method). Thus, the references are used effectively as a function type object that can be passed and called on.

#java #tech blogs #java 8 #lambda expressions in java

Going Beyond Java 8: Local Variable Type Inference (var) - DZone Java

According to some surveys, such as JetBrains’s great survey, Java 8 is currently the most used version of Java, despite being a 2014 release.

What you are reading is one in a series of articles titled ‘Going beyond Java 8,’ inspired by the contents of my book, Java for Aliens. These articles will guide you step-by-step through the most important features introduced to the language, starting from version 9. The aim is to make you aware of how important it is to move forward from Java 8, explaining the enormous advantages that the latest versions of the language offer.

In this article, we will talk about the most important new feature introduced with Java 10. Officially called local variable type inference, this feature is better known as the **introduction of the word **var. Despite the complicated name, it is actually quite a simple feature to use. However, some observations need to be made before we can see the impact that the introduction of the word var has on other pre-existing characteristics.

#java #java 11 #java 10 #java 12 #var #java 14 #java 13 #java 15 #verbosity

Java Lambda Expressions Example | Lambda Expression in Java

Java lambda expressions are unnamed methods, which are used to implement the abstract method of functional interface. Lambda expressions are also known as closures. They are used to call methods as  objects.

The lambda expressions are added in Java 8 and provide below functionalities.

1. It enables to treat functionality as the method argument, or code as data.
2. The function that can be created without belonging to any class.
3. The lambda expression can be passed around as if it was an object and executed on demand.

Java Lambda Expressions

Lambda expressions use the lambda operator (->) which divides the lambda expression into two parts. The part on the left side contains the parameters required by the lambda expression, and the part on the right side specifies the body of the lambda expression.

The parameters are enclosed in parenthesis, and the body is enclosed in curly braces.

Note: A functional interface is an  interface that contains only one abstract method. A functional interface is also known as SAM(Single Abstract Method) interface. @FunctionalInterface could be written to create a functional interface that will show an error if the properties of the functional interface got violated.

#java #lambda expressions #java 8