Eclipse启动错误：A Java Runtime Environment JRE) or Java Development Kit (JDK) must be available in order

启动Eclipse报错：
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: E:\ Download\ eclipse java-2019-12-R-win32-x86 _64\ eclipse\ jre\ bin\ javaw.
exe javaw. exe in your current PATH
解决办法：
打开Eclipse根目录eclipse.ini文件，在最前面加上两行：
-vm
C:\ProgramFiles\Java\jdk1.8.0_45\bin\javaw.exe

这个是你安装的javaw.exe的绝对路径。