linux Java环境变了配置

1. sudo /etc/profile

     jdk1.8.0_212下载地址 

      https://download.oracle.com/otn/java/jdk/8u212-b10/59066701cf1a433da9770636fbc4c9aa/jdk-8u212-linux-x64.tar.gz?AuthParam=1561435550_7e7a0b6959aadda1479dc967eaa459df

　　

   控制台输入  source /etc/profile 使其生效

2.安装截图配置

      输入javac 进行验证