Eclipse - 没有 Java (JRE)/(JDK) ...没有虚拟机 [英] Eclipse - no Java (JRE) / (JDK) ... no virtual machine

问题描述

我正在尝试让 Eclipse v3.5 (Galileo) 在我的计算机上重新运行 - 我之前运行它没有任何问题，但是 现在我不断收到此错误:<块引用>

Java 运行时环境 (JRE) 或 Java 开发工具包 (JDK) 必须可用才能运行 Eclipse.搜索以下位置后未找到 Java 虚拟机:C:eclipsejrejavaw.exejavaw.exe 在您当前的路径中

我刚刚重新安装了 JDK 和 SDK.

我有 Windows 7 (x64).

这是怎么回事?我该如何解决?

我无法运行任何 ipconfig/tracert/或 ping.

解决方案

Eclipse 将默认尝试使用默认的java.exe"(您的 PATH 引用的第一个)

要记住的三件事:

• 安装" 评论:
  <块引用>

  我运行的是 64 位 Windows 7，并且安装了 32 位 JRE.我下载了寻找 64 位 JRE 的 Eclipse 64 位.因为我没有 64 位 JRE，所以它抛出了错误，这是有道理的.

  我访问了 Java 手册安装页面(它不像您希望的那样直接访问)并安装了 64 位版本.请参阅适用于所有操作系统的 Java 下载".这就是我所需要的.

  <小时>

  2016 年 4 月:Steve Mayne 添加了 在评论中:

  <块引用>

  我必须编辑 eclipse.ini 文件以引用正确的 Java 路径 -当 eclipse.ini 中有值时，Eclipse 根本不使用环境 PATH.

  I am trying to get Eclipse v3.5 (Galileo) to re-run on my computer - I have run it before with no problems, but now I keep getting this error:

  A Java Runtime Environment (JRE) or Java Development kit (JDK) must be available in order to run Eclipse. No Java virtual machine was found after searching the following locations: C:eclipsejrejavaw.exe javaw.exe in your current PATH

  I've just done a fresh install of both the JDK and the SDK.

  I have Windows 7 (x64).

  What's up with this? How do I fix it?

  I can't run any of the ipconfig / tracert / or ping.

  解决方案

  Eclipse will by default try to launch with the default "java.exe" (the first one referenced by your PATH)

  Three things to remember:

  • "Installing" a JRE or a JDK can be as simple as unzipping or copying it from another computer: there is no special installation steps, and you can have as many different JVM versions (1.4, 5.0, 6.0...) as you want, "installed" (copied) almost anywhere on your disk.
  • I would recommend to always run Eclipse with the lastest JRE possible (to benefit from the latest hotspot evolutions). You can:
    • Reference that exact JRE path in your eclipse.ini.
    • Copy any JRE of your in your <eclipse>/jre directory. In both cases, no PATH to update.
  • The JVM you will reference within your Eclipse session is not always the one used for launching Eclipse because:
    • You only need a JRE to launch Eclipse, but once Eclipse launched, you should register a JDK for your projects (especially for Java sources and debugging purposes, also in theory for compilation but Eclipse has its own Java compiler) Note: You could register just a JRE within Eclipse because it is enough to run your program, but again a JDK will allow for more operations.
    • Even though the default registered Java in Eclipse is the one used to launch the session, you can want to register an older SDK (including a non-Sun one) in order to run/debug your programs with a JRE similar to the one which will actually be used in production.

  ---

  June 2012, jmbertucci comments:

  I'm running Windows 7 64-bit and I had the 32-bit JRE installed. I downloaded Eclipse 64-bit which looks for a 64-bit JRE. Because I didn't have the 64-bit JRE it threw the error, which makes sense.

  I went to the Java manual install page (which was not as directly accessible as you'd like) and installed the 64-bit version. See "Java Downloads for All Operating Systems". That was all I needed.

  ---

  April 2016: Steve Mayne adds in the comments:

  I had to edit the eclipse.ini file to reference the correct Java path - Eclipse doesn't use the environment PATH at all when there is a value in eclipse.ini.

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