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                # **步驟↓:** ## 1. 下載jdk, Oracle JDK下載地址:http://www.oracle.com/technetwork/cn/java/javase/downloads/index.html。選擇需要的jdk版本,下載\*.tar.gz格式的打包文件。如果是64位主機,則下載\*-x64.tar.gz,如果是32位主機,則下載\*-i586.tar.gz。本文以64位主機,jdk 1.8為例: ![](http://dl2.iteye.com/upload/attachment/0128/2377/20f145a0-b64b-389a-94e5-c8b44f456f84.png) ?進入上邊說的下載地址,找到需要的版本,點擊JDK download. ![](http://dl2.iteye.com/upload/attachment/0128/2379/79bcd8f2-4200-380b-a875-5a73fd793f27.png) ?下載jdk-8u144-linux-x64.tar.gz這個文件。 ## 2. 使用FTP工具將下載好的jdk安裝包上傳至主機。 ![](http://dl2.iteye.com/upload/attachment/0128/2381/f832c419-d18a-3a21-a138-9358502684c9.png "點擊查看原始大小圖片") ?暫時上傳到自己的home目錄下。 ## 3. 解壓: ``` tar?-xvf?jdk-8u151-linux-x64.tar.gz??? ``` ## 4. 配置環境變量: ``` vi?~/.bashrc?? #在文件最后添加如下環境變量???? export?JAVA_HOME=/usr/jdk/jdk1.8.0_151/???? export?PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH export?CLASSPATH=$CLASSPATH:.:$JAVA_HOME/lib:$JAVA_HOME/jre/lib?? ``` 使環境變量生效 ``` source?~/.bashrc?? ``` ## 5. 此時jdk已經安裝完成了,檢查一下: ``` java?-version?? java?version?"1.8.0_151" Java(TM)?SE?Runtime?Environment?(build?1.8.0_151-b12)?? Java?HotSpot(TM)?64-Bit?Server?VM?(build?25.151-b12,?mixed?mode)?? ``` ?輸入:java -version會輸出java版本信息,說明jdk安裝成功,環境變量設置沒有問題。
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