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JavaRa 检查你电脑里是否有最新的Runtime Environment (JRE).环境，然后帮你下载安装
JavaRa will check if your computer has the latest version of Java Runtime Environment (JRE). If the version you have installed has been superseded by a newer version the program will download and install this newer version for you, by running Java`s update program. It then allows you to remove all possible older versions of this program. This will ensure that the security of your computer is enhanced and extra space on your hard disk is created.
