这里是JDK 5 zip文件的链接。 sun-jdk-5-win32-x86-1.5.0.12.zip

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

这里有一个好方法，但有点复杂:

阶段1:MSI和CAB从本地安装文件

请从Oracle (Sun)网站下载JRE或JDK。此方法适用于任何版本和SDK或JRE。 运行并等待安装程序加载。最小化窗口。 在Windows 7中，你应该浏览到这个位置: C:\Users\ YOUR_USER_NAME \AppData\LocalLow\Sun\Java 在那里，您将有一些MSI和CAB文件。

第二阶段:使用uniextract轻松提取MSI和CAB

浏览到Universal Extractor | LegRoom.net并下载UniExtract二进制档案。 使用WinRar或任何可用的unrar程序，并在任何地方提取uniextract161_noinst.rar。

阶段3:最后，提取名为core.zip的内部容器

拖放jdk1.6.0_31。Msi或jre1.6.0_31。在UniExtract.exe的图标上打开msi。 选择“提取方法:MSI管理安装程序”。等待过程结束。 输入新创建的文件夹。 如果您已经拖放了jre1.6.0_31。Msi你应该有一个jre1.6.0_31文件夹 遵循所有级别，您将看到core.zip。 这就是你所追求的。您可以在任何地方解压缩它，这样就有了Java运行时或SDK的内容，而无需在系统上安装任何东西。

你现在可以关闭在第一阶段打开的Java安装程序了

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%\jre\lib\ext

安装在沙箱，并复制文件夹。

试试这个: http://maven.nuiton.org/nexus/content/repositories/jvm/com/oracle/jre/

此链接包含所有版本的可移植zip发行版。