阿里雲centos7服務器卸載openJDK並安裝jdk

1.查看已經安裝的jdk rpm -qa|grep jdk 顯示結果以下 java-1.8.0-openjdk-1.8.0.161-0.b14.el7_4.x86_64 java-1.8.0-openjdk-headless-1.8.0.161-0.b14.el7_4.x86_64 copy-jdk-configs-2.2-5.el7_4.noarch 2.用yum卸載openJDK yum -y

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