The JDK 64-bit also comes with a complete Java Runtime Environment, usually called a private runtime. It consists of a Java Virtual Machine and all of the class libraries present in the production environment, as well as additional libraries only useful to developers, and such as the internationalization libraries and the IDL libraries.

I like to be sure that everything will work just by copying the contents of the Java folder and setting the environment variables.

I usually run the installer in a virtual machine, zip the java folder contents, go back to a snapshot of the virtual machine, and then unzip the compressed file.

I couldn't find a place where the latest JRE / JDK is available as a zip file...

Alternately, is it safe to assume that exe installer from sun just will just unzip the whole thing, without messing around with the registry, environment variables, etc...?

Related: Installing Java manually on Windows?

--After all this time I found this site that seems to be exactly what I was looking for (2018-05-22)

closed as off-topic by Mogsdad, Erik A, TylerH, Paul Roub, MachavityNov 14 '17 at 20:24

This question appears to be off-topic. The users who voted to close gave this specific reason:

• 'Questions asking us to recommend or find a book, tool, software library, tutorial or other off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and what has been done so far to solve it.' – Mogsdad, Erik A, TylerH, Paul Roub, Machavity

30 Answers

You can download a Java Portable from PortableApps.com. It will not change your system settings. You can put it on your USB stick.

UPD: for those who needs JDK there's an open-source project OpenJDK Portable

Jdk-6u45-windows-x64.exe Mirror

JDK is not available as a portable ZIP file, unfortunately. However, you can follow these steps:

• Create working JDK directory (C:JDK in this case)
• Download latest version of JDK from Oracle (for example jdk-7u7-windows-x64.exe)
• Download and install 7-Zip (or download 7-Zip portable version if you are not administrator)
• With 7-Zip extract all the files from jdk-XuXX-windows-x64.exe into the directory C:JDK
• Execute the following commands in cmd.exe:
  • cd C:JDK.rsrc1033JAVA_CAB10
  • extrac32 111
• Unpack C:JDK.rsrc1033JAVA_CAB10tools.zip with 7-zip
• Execute the following commands in cmd.exe:
  • cd C:JDK.rsrc1033JAVA_CAB10tools
  • for /r %x in (*.pack) do .binunpack200 -r '%x' '%~dx%~px%~nx.jar' (this will convert all .pack files into .jar files)
• Copy all contents of C:JDK.rsrc1033JAVA_CAB10tools where you want your JDK to be
• Setup JAVA_HOME and PATH manually to point to your JDK dir and its BIN subdirectory.

• Create destination folder where you can RWX (e.g. C:jdk8)
• Download jdk exe from Oracle (e.g. jdk-8u72-windows-x64.exe)
• Unzip the tools.zip found inside it into the destination folder
• In cmd.exe, run:
  • cd C:jdk8
  • for /r %x in (*.pack) do .binunpack200 -r '%x' '%~dx%~px%~nx.jar'

This solution works for JDK 8 too, without Admin rights.

For JDK 8u102 things have changed, this worked for me:

1. Download windows JDK exe
2. Open with 7-Zip
3. Dump contents into a directory %JDK-EXE%
4. cmd: cd %JDK-EXE%.rsrc1033JAVA_CAB10
5. cmd: extrac32 111
6. Now have a tools.zip in directory, open it in 7-Zip
7. Extract contents into a new directory %JDK-VERSION%
8. cmd: cd %JDK-VERSION%
9. cmd: for /r %x in (*.pack) do .binunpack200 -r '%x' '%~dx%~px%~nx.jar'
10. src.zip is in %JDK-EXE%.rsrc1033JAVA_CAB9110 - put a copy into %JDK-VERSION%

Now you are ready to go.You might want to setup JAVA_HOME and PATH to point to your %JDK-VERSION% dir and its BIN subdir.

Here is a good, but a little complex, way:

Stage 1: MSI & CAB from native installation file

1. Download the JRE or JDK from the Oracle (Sun) website. This method will work on any version and on SDK or JRE.

2. Run and wait for the installer to load. Minimize the window.

3. In Windows 7, you should browse to this location:

   C:Users YOUR_USER_NAME AppDataLocalLowSunJava

4. There, you will have a few MSI and CAB files.

Stage 2: easily extract the MSI & CAB using uniextract

5. Browse to Universal Extractor | LegRoom.net and download UniExtract Binary Archive.

6. Use WinRar or any un-RAR program available to you, and extract uniextract161_noinst.rar anywhere.

Stage 3: finally, extract the inner container named core.zip

7. Drag & drop jdk1.6.0_31.msi or jre1.6.0_31.msi on the icon of UniExtract.exe.

8. Select 'Extract Method: MSI Administrative Installer'. Wait for the process to finish.

9. Enter the new created folder.

   If you've drag-and-dropped jre1.6.0_31.msi you should have a jre1.6.0_31 folder

10. Follow all levels inside and you'll see core.zip.

11. This is what you are after. You can just unzip it anywhere and you'll have the content of the Java runtime or SDK without installing anything on your system.

* You can now close the installer of Java you've left opened in stage 1 *

The answer has been given before. It works for 'jdk-8u91-windows-x64.exe' also

1. Unzip with 7-zip, so we get tools.zip

2. Unzip tools.zip to a folder folder_name so we get the contents in the picture

3. In cmd move to the folder folder_name/bin and run the command

   java -version

the output will be

this indicates that there is something messing. Actually we need to unpack all packages.

4. In cmd move to the folder folder_name and automatically do the unpacking by executing the command

   for /r %x in (*.pack) do .binunpack200 -r '%x' '%~dx%~px%~nx.jar'

5. Do step 3 again, if you get the output bellow, then the JDK is ready to use.

This is how I do it,

Start with the exe installation and wait for the below screen,

Go to the C:Program Files (x86)Java and copy your JDK to another place.

Cancel the installation by clicking 'x' and uninstall JDK.

Copy the copied JDK back into C:Program Files (x86)Java or other folder of your choice

1. Download jdk from Oracle website: http://www.oracle.com/technetwork/java/javase/downloads/index.html
2. Unzip the exe. For example: jdk-8u5-windows-x64.exe
3. Unzip the following file: tools.zip (found under the unzipped folder) to the desired JAVA_HOME.
4. Update the JAVA_HOME environment variable to point to your desired path.

Tested for version: jdk-7u60-windows-x64.exe, jdk-7u60-windows-x64.exe

1. Download jdk from Oracle website: http://www.oracle.com/technetwork/java/javaee/downloads/index.html
2. Unzip the exe. For example: jdk-7u55-windows-x64.exe
3. Unzip the following file: ProductPackagesjdk.zip (found under the unzipped folder) to the desired JAVA_HOME.
4. Update the JAVA_HOME environment variable to point to your desired path.

Tested for version: jdk-7u55-windows-x64.exe

There is a .tar.gz file of the Java Runtime Environment (JRE) on the Oracle website for these operations systems: Windows x86, Windows x64, Linux x86, Linux x64, Mac OS X x64, Solaris x64.See: http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html

Also there is the Java Development Kit (JDK): http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html.The Windows .tar.gz. is missing, but you can just extract the .exe file with a tool like 7zip.

I found this is very useful to make Eclipse portable. ;-)

You can download a portable Zulu .zip archive from Azul Systems, which are builds of OpenJDK for Windows, Linux (RHEL, SUSE, Debian, Ubuntu, CentOS) and Mac OS X.

Zulu is a certified build of OpenJDK that is fully compliant with the Java SE standard. Zulu is 100% open source and freely downloadable. Now Java developers, system administrators and end users can enjoy the full benefits of open source Java with deployment flexibility and control over upgrade timing.

More technical information on different JVMs (including Zulu) with their architectures and OS support here.

The widely-upvoted answer is fine, I've used it for quite some time in the form of this bat file:

It requires access on the path to 7zip, and must be run in a folder alongside the JDK of your choice (it'll find it because of the *.exe up here).

Works on 8u144, and I guess it worked from the 8u20 thing.

try this:http://maven.nuiton.org/nexus/content/repositories/jvm/com/oracle/jre/

this link contains portable zip distributions for all versions.

Here is a link for JDK 5 zip file.sun-jdk-5-win32-x86-1.5.0.12.zip

Download the Processing application from http://www.processing.org/download/. The zip file contains a folder called java. It includes the JDK 1.6.0_32 (version checked on 19/02/2013).

The Sun JVM is available as a MSI which is executable from a script.

Tested with jdk-8u74-macosx-x64.dmg.

1. Download from Oracle the .dmg
2. Mount the disk image
3. Extract the .pkg, dragging it. Do not double-click (it will install).
4. Open a terminal and cd into the package.
5. mkdir jdk-$version && cd jdk-$version
6. xar -xf ../JDK*.pkg
7. cd jdkTAB
8. tar zxf Payload
9. The Contents/Home folder contains the JDK

JDK's can be downloaded from here as zip file nor .exehttp://installbuilder.bitrock.com/java/

Thanks for asking; the JDK does not seem to interact with the Windows registry.

However, the JRE does in certain instances.

Link: http://www.rgagnon.com/javadetails/java-0604.html

The Process described by Igor and CharlesB Works to me, since IDE's like NetBeans and Eclipse permit specify the location of the JDK, even software like Apache Tomcat (the ZIP Distribution) use BASH - FILES to set it up (then specify the JDK location using relatives URI).
I Have a USB-HardDisk With NetBeans, Eclipse, Apache Tomcat working with a JDK in 'portable mode'.
I Had a way to extract a copy of the JDK from the installers files: Install it, Copy it in other place and then uninstall it. A dirty way to extract it, but was successfull.
The place to put EXTRA - LIBS was: %PLACE_WHERE_JDK_ARE%jrelibext

You can just use 7zip (or another similar app) to get the dirs inside the core.zip file that's bundled in the installer.Just use 7zip to browse the exe, you'll see a core.zip file which has all the files that usually go inside 'jreX' dir (where X is the major version number).As for setting env variables and the such, you can follow the other answers. If all you want is a portable jre (for example, you can run your jars by using java.exe jarfile or javaw.exe jarfile) then this solution will do.This is very similar to copying the jre dir from one place to another

This link

helps you at least avoid the obnoxious preload installer getting straight to the SDK.

From there, I would install this in a throw-away VM, on your old crufty PC or elsewhere, then transfer the resulting

(or similar) to your new machine, set the very few usual ENV variables, and there you ideally go, w/o all the marketing junk and potential tie-ins. Of course, also w/o the security from frequent automatic updates.

I discovered you can run the installer in Wine. This works:

WINEPREFIX=/home/jason/java wine jre-7u11-windows-i586.exe

Then once it is finished you can just zip up the /home/jason/java/drive_c/Program Files (x86)/Java/jre7/

This should work for jdk as well

You can download SEVER JRE it contains jdk. server jre 7

1. Download server-jre-< version>.tar.gz file for windows system.
2. If you have 7zip tar file can be extracted by that, I used cygwin(cygwin can be installed without admin rights see this answer) to extract tar file with command tar xzvf file.tar.gz any other tar extractor will also work

Now extracted JDK folder will be created in same folder.

I did copy the JRE folder several times and it always works fine. But I am really not sure if you can just get a zip file with its contents, as the official installation install the plugins for IE, Firefox and whatsoever.

Jdk 6u45 Windows I586

You can get jre-7u75-windows-i586.zip from the link above.

Jre-6u45-windows-x64.exe Free Download

Commands from tips below wrapped as batch script. Save this as unpack.bat. Then place it to dir with jdk/jre extracted files.

I installed JDK 8 with the exe installer and then uninstalled JRE, I now have JDK folder with no env variable or other setting changed.

Here's where. Download the .gz package.

Not the answer you're looking for? Browse other questions tagged javainstallation or ask your own question.

• Compile, debug, and run Java applications on your computer
• Last updated on 03/25/19
• There have been 1 update within the past 6 months
• The current version has 0 flags on VirusTotal

What do you need to know about free software?

Http://jdk-6u45-windows-x64.zip