在centos7下jdk的安裝

1.官網下載jdk:http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html 2.檢測jdk安裝包：rpm -qa | grep java          3.刪除openjdk: 1.rpm -e --nodeps 要卸載的軟件;  2.yum remove *openjdk* 4.把

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