0
A Java Runtime Environment (JRE) is the base set of data files and programs (executables) which are required to run Java Applications. Typically, this consists of a Java Virtual Machine (a virtual computer/processor which the Java program runs 'on'), the Java Libraries (definitions of objects and functionality which Java programs can utilise), and any additional supporting software.
If you have been instructed to get java so that you may use a certain website or piece of software, this means you are required to install a JRE.
The 'standard' JRE is developed by Sun Microsystems, the original developers of Java, and is available at http://java.sun.com/
Typically, each JRE version has had multiple updates since its initial release, so you will probably need to download a file called something like Java 6 update 2, or JRE 6 update 2, or even referred to via shorthand like Java 6u2.
To test which version of a JRE is installed (if any), run the command "java -version" in a command-line (Windows) or Terminal (Unix/Linux/Mac).
Other run-time implementations of Java are available under different license conditions, although most focus on the actual JVM itself, rather than completely re-implementing all of the additional tools and libraries.
The JRE is distinct from the JDK (Java Development Kit) in that the JDK contains additional software which is required only for developing Java applications - such as the Java Compiler javac, and which most users will not require.
Still curious? Ask our experts.
Chat with our AI personalities
Judy
Beau
DevinThe Java Runtime Environment (JRE) provides the libraries, the Java Virtual Machine, and other components to run applets and applications written in the Java programming language. In addition, two key deployment technologies are part of the JRE: Java Plug-in, which enables applets to run in popular browsers; and Java Web Start, which deploys standalone applications over a network.
Add your answer:
Earn +20 pts
Who invoke main function in java?
The Java Runtime Environment invokes main methods.
Will Java runtime environment affect your PC?
Probably not, unless you run a virus written in Java.
What is ther role of jre in java?
JRE stands for Java Runtime Environment. JRE is the runtime set up that is required by the JVM to execute java programs. The JRE and JVM (Java Virtual Machine) come packaged along with the Java Development Kit (JDK) that we download and install from the suns website to install Java.
What translates a Java program into Bytecode?
The Java Runtime Environment (JRE) converts the byte code to machine language.
What is J2Se runtime?
The J2SE Runtime Environment is a platform that enables quick development and execution of Java applications. It was developed by Sun Microsystems.
