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The Java Runtime Environment commonly referred to as JRE, is a software layer that provides the libraries Java programs need to run. It typically runs on top of the computer's operating system as added assistance. Additionally, the JRE installation package includes Java Web Start and Java Plugin to provide advanced support for future Java updates.

What is Java Runtime Environment?

Java Runtime Environment (JRE) is a software package developed by Oracle Corporation (formerly by Sun Microsystems) that enables the execution of Java applications on various platforms. It is an essential component for running Java-based applications, applets, and programs. The JRE provides the necessary runtime libraries, virtual machines, and other components required to execute Java code.

What are the key features of Java Runtime Environment?

  • Interface Toolkits: The Java JRE includes toolkits that assist developers in improving their user interface. You will gain access to Java 2D (an Application Programming Interface), Abstract Window Toolkit (a Graphical User Interface), and Swing (another Graphical User Interface). With these three, you will be able to create special effects, animations, scroll bars, and windows.
  • Integration libraries: Java Runtime Environment provides a number of integration libraries to assist developers in creating seamless data connections between their applications and services.
  • Java IDL support: distributed objects written in Java programming language, and the Java Database Connectivity Provides for writing applications with access to remote relationship databases, flat files, and spreadsheets.
  • Language and utility libraries: These java.lang. and java.util. packages are essential for designing applications, package versioning, management, and monitoring. With this, you will be able to work with Collections frameworks, concurrency utilities, logging, preferences API, and Java Archive.
Java Runtime Environment
© Java Runtime Environment

How to use Java Runtime Environment?

JRE works as a full-featured package to work with Java programming language and make the most out of it. You can learn more about it via its official Help page.

Is Java Runtime Environment free?

Desktop Java Runtime Environment’s (Java Standard Edition SE) pricing is $2.50 per user per month, or lower with tiered volume discounts.

Is JRE safe?

Yes, Java Runtime Environment is a widely used Java tool, it is safe and secure.

What is the difference between JDK and JRE?

JDK, which stands for Java Development Kit, is a software development environment utilized for creating Java applications and applets. Java developers can utilize it on various operating systems such as Windows, macOS, Solaris, and Linux. The JDK facilitates coding and execution of Java programs, and multiple versions of the JDK can be installed on the same computer.

On the other hand, JRE, short for Java Runtime Environment, is a software component designed to execute other software. It encompasses class libraries, a loader class, and the JVM (Java Virtual Machine). In simpler terms, JRE is required to run Java programs. If you are not a programmer, you do not need to install the JDK, but only the JRE to execute Java applications. Notably, all versions of JDK come bundled with the Java Runtime Environment, eliminating the need to separately download and install the JRE on your PC.

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