总是会提示这样的信息:The Eclipse executable launcher was unable to locate its companion shared library.这是什么情况?下载了JRE,配置了相应环境变量,但是验证是否安装成功时,在命令窗口输入javac总会显示错误,我确定 按照网上大侠们的步骤配置的,各种不给力,求高手指点