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How is JRE or JVM installed on a computer?

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βˆ™ 2010-11-15 10:54:35

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The JVM is part of the JRE (Java Runtime Environment) or the JDK (Java Developer Kit).

Both the JDK and JRE are packages available from a variety of sources. The most common one is available from Sun (now Oracle). You simply visit the web site, and it will then download and install the JRE for you after you answer a couple of questions:

http://www.java.com/

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βˆ™ 2010-11-15 10:54:35
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Related Questions

Is JVM available on every machine?

Yes - In every machine that has the Java Runtime Environment (JRE) installed, the JVM will be available.


Can you have more than one jvm?

Yes you can. PS: Each JRE version would have a different JVM. If you have multiple JRE versions in your machine then you would have multiple JVMs


Is Jvm in the system?

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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.


Why java interpreted?

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What's the difference between JVM and JDK?

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Why JVM is platform independent?

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What is difference between jvmjre and jdk?

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What is the difference between Java IDE and JVM?

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Why it is not possible to execute java program on machine which does not have JVM installed on it?

when a java program is compiled it is converted into a non executable code which is byte code, and this byte code can only be interpreted by JVM. so a java program can't be executed on a machine which doesn't have JVM installed on it.


Do you need java runtime on your computer?

JRE or Java Runtime Environment is required in your computer if you want to execute Java programs. Without a JRE in your system you will not be able to run java programs.


If your java program says no compiler is available what does that mean?

It means you have not installed jdk and jre in your machine...


What is needed to run java?

A JVM (Java Virtual Machine), which is a compiler for the compiled Java files, has to be installed on the machine where you want to run the Java program.A JVM (Java Virtual Machine), which is a compiler for the compiled Java files, has to be installed on the machine where you want to run the Java program.A JVM (Java Virtual Machine), which is a compiler for the compiled Java files, has to be installed on the machine where you want to run the Java program.A JVM (Java Virtual Machine), which is a compiler for the compiled Java files, has to be installed on the machine where you want to run the Java program.


JDK version is same as JRE version?

No, not necessarily. JDK stands for Java Development Kit and JRE stands for Java Runtime Environment. They can be of the same or different versions each. It is better if we have two compatible or same versions of JDK and JRE installed for ease of use.


How is it possible that the same Java program can run on different platforms?

Java source code is compiled into .class files, which are used by the Java Virtual Machine (JVM). The format of the .class file is the same for all platforms, and so the source code can be compiled the same way on each platform. The JVM, however, needs to be written to run on a specific platform. This is the part which converts Java bytecode to native bytecode, and is why you need to download the JRE (which contains the JVM) for a specific platform. Java source code is compiled into .class files, which are used by the Java Virtual Machine (JVM). The format of the .class file is the same for all platforms, and so the source code can be compiled the same way on each platform. The JVM, however, needs to be written to run on a specific platform. This is the part which converts Java bytecode to native bytecode, and is why you need to download the JRE (which contains the JVM) for a specific platform.


What is JVM in java?

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How do you find the JVM version?

Just type in your command line this: java -version If you have the java installed in your machine the above command show you the version installed.


Full form of JRE?

JRE : Java Runtime Environment


Do you need JRE if you already have JDK?

No, the JDK includes the JRE.


What is jre?

The "JRE" is the Java Runtime Environment. I.e., the JRE is an implementation of the Java Virtual Machine which actually executes Java programs.


What is the use of providing jre?

The JRE refers to Java Runtime Environment... JRE is an implementation of the Java Virtual Machine which actually executes Java programs. Without the JRE we cannot execute our Java programs.


Should IDE be a part of JRE?

An IDE cannot be part of a JRE. The "JRE" is the Java Runtime Environment. I.e., the JRE is an implementation of the Java Virtual Machine which actually executes Java programs. An IDE refers to - Integrated Development Environment, using which we can develop Java programs and applications. an IDE comes with an implementation of a JRE. so it cannot be part of a JRE


Is it possible to run java program without JVM?

No. Java programs run in the Java Virtual Machine (JVM) - without it your computer won't know how to handle Java bytecode.


How much space does Java take to download?

On a Windows platform the online Java Runtime Environment (JRE) installer is approximately 0.86 MB and the installed size on disk is about 98MB. The downloadable full Windows offline JRE installer is larger ~30.2 MB and for MacOS ~50 MB.