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Is there a way to install Java 7 on a USB port and use it for projects in eclipse?

I have a computer and a laptop. Since I encode both, I put my eclipse workspace on USB. But my computer has Java 7 and 6, but my laptop has only Java 6. I want to use Java 7 on my laptop. Is there any way to put it on USB and indicate its use. I did a research and found something about adding a JAR to the library, but when I load the Java 7 JDK it is in whole folders. I am doing it wrong or talking about something completely different.

As some people said. This is not my laptop completely. These are my fathers who he had from work. However, it does not allow anything to be installed on it. Including java 7. Which annoys me, but that is why I ask this question.

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Install java in the eclipse directory (use jre / jdk instead of jre7), eclipse will pick it up (or it did this for me in windows).

Alternatively edit eclipse.ini (there is a -VM option to indicate where Java is located).

also see http://portableapps.com/node/929 or http://www.codeproject.com/Articles/417140/Eclipse-on-a-USB-flashdrive

Since there are some doubts about this method. I am using Windows Eclipse version (1.4.1.2), the jre7 directory has been copied to jre under eclipse. Where there is no change in eclipse.ini.

, Java , , Eclipse ( → → ), Eclipse , jre F (USB). jre, java .

-vm
F:\eclipse\jre\bin\client\jvm.dll
eclipse.home.location=file:/F:/eclipse/
eclipse.launcher=F:\eclipse\eclipse.exe
eclipse.launcher.name=Eclipse
eclipse.p2.data.area=@config.dir/../p2/
eclipse.p2.profile=epp.package.java
eclipse.product=org.eclipse.epp.package.java.product
eclipse.startTime=1365550480114
eclipse.vm=F:\eclipse\jre\bin\client\jvm.dll
eclipse.vmargs=-Dosgi.requiredJavaVersion=1.5

   ......

sun.boot.class.path=F:\eclipse\jre\lib\resources.jar;F:\eclipse\jre\lib\rt.jar;F:\eclipse\jre\lib\sunrsasign.jar;F:\eclipse\jre\lib\jsse.jar;F:\eclipse\jre\lib\jce.jar;F:\eclipse\jre\lib\charsets.jar;F:\eclipse\jre\classes
sun.boot.library.path=F:\eclipse\jre\bin

   ......


java.endorsed.dirs=F:\eclipse\jre\lib\endorsed
java.ext.dirs=F:\eclipse\jre\lib\ext;C:\Windows\Sun\Java\lib\ext
java.home=F:\eclipse\jre
java.io.tmpdir=C:\Users\mum\AppData\Local\Temp\
java.library.path=F:\eclipse;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;F:/eclipse/jre/bin/client;F:/eclipse/jre/bin;F:/eclipse/jre/lib/i386;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files\Dell\DW WLAN Card;C:\Program Files (x86)\Common Files\Roxio Shared\DLLShared\;C:\Program Files (x86)\Common Files\Roxio Shared\OEM\DLLShared\;C:\Program Files (x86)\Common Files\Roxio Shared\OEM\DLLShared\;C:\Program Files (x86)\Common Files\Roxio Shared\OEM\12.0\DLLShared\;C:\Program Files (x86)\Roxio\OEM\AudioCore\;C:\Program Files\WIDCOMM\Bluetooth Software\;C:\Program Files\WIDCOMM\Bluetooth Software\syswow64;C:\Program Files (x86)\Windows Live\Shared;C:\Program Files\Bruce\jEdit;C:\Program Files (x86)\QuickTime\QTSystem\;c:\Regina;C:\Program Files\TortoiseSVN\bin;;F:\eclipse;;.

jre-

-vm
C:\Program Files (x86)\Java\jre7\bin\client\jvm.dll
eclipse.home.location=file:/F:/eclipse/
eclipse.launcher=F:\eclipse\eclipse.exe
eclipse.launcher.name=Eclipse
eclipse.p2.data.area=@config.dir/../p2/
eclipse.p2.profile=epp.package.java
eclipse.product=org.eclipse.epp.package.java.product
eclipse.startTime=1365550310914
eclipse.vm=C:\Program Files (x86)\Java\jre7\bin\client\jvm.dll
eclipse.vmargs=-Dosgi.requiredJavaVersion=1.5
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