Eclipse启动出现：a java runtime environment(JRE) or java development kit(JDK) must be....

之前启动eclipse都是好的，今天启动eclipse突然提示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:D:\adt-bundle-windows-x86_64-20140702\eclipse\jre\bin\javaw.exe javaw.exe 。

将安装jdk路径下的C:\Program Files\Java\jre1.8.0_65文件夹直接拷贝到D:\adt-bundle-windows-x86_64-20140702\eclipse下将jre1.8.0_65重命名为jre,点击eclipse启动就OK了。