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                # Linux安裝jdk8及環境變量配置 1、下載JDK版本jdk-8u211-linux-x64.tar.gz,然后傳到linux服務器 2、解壓縮:tar -zxvf jdk-8u211-linux-x64.tar.gz 3、利用mkdir創建目錄 /usr/local/java 復制解壓縮文件到 /usr/local/java ``` mkdir /usr/local/java cp -r /usr/hj/jdk1.8.0_211/ /usr/local/java/ ``` 4、環境變量配置 ``` 1、編輯/etc/profile文件`vi /etc/profile` 2、按`Insert`或者`I`鍵,切換成編輯模式。找到內容末尾,按圖片輸入下面一段話。 ``` JAVA\_HOME=/usr/local/java/jdk1.8.0\_211 CLASSPATH=$JAVA\_HOME/lib/ PATH=$PATH:$JAVA\_HOME/bin export PATH JAVA\_HOME CLASSPATH 5、生效環境變量對于/etc/profile編寫完成之后是不夠的,還需要最后一個步驟,就是讓剛剛我們修改的文件變成有效起來,所以我們再輸入一個命令,讓修改生效。生效命令:`source /etc/profile` 6、驗證安裝是否成功 ![](https://img.kancloud.cn/8f/df/8fdf65a9b188370b6844a4cdff0fdef9_540x84.png) `java -version`
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