Installation and configuration of JDK (RPM mode and tar.gz Method)

Jinwen0324 2020-11-10 20:04:59
installation configuration jdk rpm mode


It used to be in Windows Environment development , Recently, due to the need of work ; Learning in Linux Build the development environment under the system , From then on, record the build process , For easy reference .

This article draws on  Angel A squeeze  、 Xiao Wu   Two blogs .

 

Prepare the material :

JDK Download link : Download link on official website ( Need to log in )

Personal offer - edition 8u271( Nut cloud )

Terminal simulator :MobaXterm ( Free open source ; There is no need to install this item , But directly in Linux Operating in the system )

Linux System version :CentOS7

user :root user ( There may be problems in the operation of ordinary users , Please Baidu

 

Construction process :

View and delete the system's own openjdk

Through the command :java -version View installed JDK Version information

        

Find installed JDK Related documents

  rpm -qa | grep java ( System native openjdk Use this command )

rpm -qa | grep jdk ( Self installing JDK Use this command )

        

Use the following command to uninstall the installed JDK(*.noarch file You can ignore ):

rpm -e --nodeps java-1.8.0-openjdk-headless-1.8.0.262.b10-0.el7_ 8.x86_64

rpm -e --nodeps java-1.8.0-openjdk-1.8.0.262.b10-0.el7_8.x86_64

notes :1. Use rpm -e --nodeps command , It will be deleted synchronously JDK The installation directory

2. rpm -qa | grep command , Yes tar.gz How to install JDK Invalid

3. tar.gz Installed by JDK You need to uninstall ( Delete )

First , adopt echo $JAVA_HOME Command to determine JDK The installation directory ;

then , adopt rm -rf  /usr/java/jdk1.8.0_271 Delete this directory

Last , adopt vim /etc/profile The order will “JAVA_HOME” Empty after the equal sign ( Purpose : Disassociate )

Verify that the deletion was successful ( A red sign appears , Indicates that the uninstall was successful ):

java -version

 

rpm The way

First step : By any means , Will download "jdk-8u271-linux-x64.rpm" Files in Linux In the system

The second step : Start the installation by command ( After installation , It can be done by java -version Command confirmation is successful )

chmod 755 jdk-8u271-linux-x64.rpm (chmod yes Linux Set file permissions under the command ,755 Means to read 、 Can write 、 Executable ;root Under the user , It doesn't seem necessary )

rpm -ivh jdk-8u271-linux-x64.rpm

  The third step :rpm Default installation path (/usr/java/jdk1.8.0_271-amd64

  Step four : Configure environment variables

Through the command vim /etc/profile, Will install new jdk Table of contents assigned to JAVA_HOME

  Step five : Through the command  source /etc/profile Make the profile effective immediately , And verify that the configuration is successful (echo $JAVA_HOME

Whether the content of the red logo is related to its own jdk The installation path is consistent

  Step six : Execute at the terminal  java、javac confirm JVM Be able to function

tar.gz The way

              First step : By any means , Will download "jdk-8u271-linux-x64.tar.gz" Files in Linux In the system

The second step : By order will jdk-8u271-linux-x64.tar.gz Unzip to the path you want to install

tar -xzvf /root/ download /jdk-8u271-linux-x64.tar.gz -C /usr/java

notes :-C The path that follows must be real ( If it doesn't exist, it can be done by  mkdir -p   Create file paths with cascading relationships (-p Create the folder layer by layer according to the path ))

The third step : Configure environment variables

Through the command  ls -al /usr/java  Check the newly created jdk Installation folder ; Assign the file path to /etc/profile Of documents JAVA_HOME

  Step four : Through the command  source /etc/profile  Make the profile effective immediately , And verify that the configuration is successful (echo $JAVA_HOME

Step five : Execute at the terminal  java、javac confirm JVM Be able to function

版权声明
本文为[Jinwen0324]所创,转载请带上原文链接,感谢

  1. 【计算机网络 12(1),尚学堂马士兵Java视频教程
  2. 【程序猿历程,史上最全的Java面试题集锦在这里
  3. 【程序猿历程(1),Javaweb视频教程百度云
  4. Notes on MySQL 45 lectures (1-7)
  5. [computer network 12 (1), Shang Xuetang Ma soldier java video tutorial
  6. The most complete collection of Java interview questions in history is here
  7. [process of program ape (1), JavaWeb video tutorial, baidu cloud
  8. Notes on MySQL 45 lectures (1-7)
  9. 精进 Spring Boot 03:Spring Boot 的配置文件和配置管理,以及用三种方式读取配置文件
  10. Refined spring boot 03: spring boot configuration files and configuration management, and reading configuration files in three ways
  11. 精进 Spring Boot 03:Spring Boot 的配置文件和配置管理,以及用三种方式读取配置文件
  12. Refined spring boot 03: spring boot configuration files and configuration management, and reading configuration files in three ways
  13. 【递归,Java传智播客笔记
  14. [recursion, Java intelligence podcast notes
  15. [adhere to painting for 386 days] the beginning of spring of 24 solar terms
  16. K8S系列第八篇(Service、EndPoints以及高可用kubeadm部署)
  17. K8s Series Part 8 (service, endpoints and high availability kubeadm deployment)
  18. 【重识 HTML (3),350道Java面试真题分享
  19. 【重识 HTML (2),Java并发编程必会的多线程你竟然还不会
  20. 【重识 HTML (1),二本Java小菜鸟4面字节跳动被秒成渣渣
  21. [re recognize HTML (3) and share 350 real Java interview questions
  22. [re recognize HTML (2). Multithreading is a must for Java Concurrent Programming. How dare you not
  23. [re recognize HTML (1), two Java rookies' 4-sided bytes beat and become slag in seconds
  24. 造轮子系列之RPC 1:如何从零开始开发RPC框架
  25. RPC 1: how to develop RPC framework from scratch
  26. 造轮子系列之RPC 1:如何从零开始开发RPC框架
  27. RPC 1: how to develop RPC framework from scratch
  28. 一次性捋清楚吧,对乱糟糟的,Spring事务扩展机制
  29. 一文彻底弄懂如何选择抽象类还是接口,连续四年百度Java岗必问面试题
  30. Redis常用命令
  31. 一双拖鞋引发的血案,狂神说Java系列笔记
  32. 一、mysql基础安装
  33. 一位程序员的独白:尽管我一生坎坷,Java框架面试基础
  34. Clear it all at once. For the messy, spring transaction extension mechanism
  35. A thorough understanding of how to choose abstract classes or interfaces, baidu Java post must ask interview questions for four consecutive years
  36. Redis common commands
  37. A pair of slippers triggered the murder, crazy God said java series notes
  38. 1、 MySQL basic installation
  39. Monologue of a programmer: despite my ups and downs in my life, Java framework is the foundation of interview
  40. 【大厂面试】三面三问Spring循环依赖,请一定要把这篇看完(建议收藏)
  41. 一线互联网企业中,springboot入门项目
  42. 一篇文带你入门SSM框架Spring开发,帮你快速拿Offer
  43. 【面试资料】Java全集、微服务、大数据、数据结构与算法、机器学习知识最全总结,283页pdf
  44. 【leetcode刷题】24.数组中重复的数字——Java版
  45. 【leetcode刷题】23.对称二叉树——Java版
  46. 【leetcode刷题】22.二叉树的中序遍历——Java版
  47. 【leetcode刷题】21.三数之和——Java版
  48. 【leetcode刷题】20.最长回文子串——Java版
  49. 【leetcode刷题】19.回文链表——Java版
  50. 【leetcode刷题】18.反转链表——Java版
  51. 【leetcode刷题】17.相交链表——Java&python版
  52. 【leetcode刷题】16.环形链表——Java版
  53. 【leetcode刷题】15.汉明距离——Java版
  54. 【leetcode刷题】14.找到所有数组中消失的数字——Java版
  55. 【leetcode刷题】13.比特位计数——Java版
  56. oracle控制用户权限命令
  57. 三年Java开发,继阿里,鲁班二期Java架构师
  58. Oracle必须要启动的服务
  59. 万字长文!深入剖析HashMap,Java基础笔试题大全带答案
  60. 一问Kafka就心慌?我却凭着这份,图灵学院vip课程百度云