centos7 安裝 jdk1.8

1、查看是否安裝了jdk 2、jdk官網下載：linux  http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html 下載完成，上傳到centos /soft目錄下 3、在「/usr/local」下新建目錄java # mkdir /usr/local/java # cd /usr/loc

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