Centos7yum方式安装jdk8

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最新推荐文章于 2025-04-01 03:16:48 发布

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分类专栏：服务器常用组件的安装文章标签：前端 linux 运维

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本文指导如何在Linux系统中检查Java环境，包括确认是否存在、列出可用版本、选择并安装64位OpenJDK1.8.0，以及检查安装是否成功的步骤。

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1.检查本地是否有Java

命令行中执行java -version确认是否安装jdk，

如果安装了，使用yum remove命令先卸载jdk

[root@localhost redis-6.2.12]# java -version
-bash: java: command not found

2.检查yum中可用的jdk

命令行中执行yum list|grep jdk，检查所有的支持的jdk版本

[root@localhost redis-6.2.12]# yum list|grep jdk
copy-jdk-configs.noarch                     3.3-10.el7_5               local    
java-1.6.0-openjdk.x86_64                   1:1.6.0.41-1.13.13.1.el7_3 local    
java-1.6.0-openjdk-demo.x86_64              1:1.6.0.41-1.13.13.1.el7_3 local    
java-1.6.0-openjdk-devel.x86_64             1:1.6.0.41-1.13.13.1.el7_3 local    
java-1.6.0-openjdk-javadoc.x86_64           1:1.6.0.41-1.13.13.1.el7_3 local    
java-1.6.0-openjdk-src.x86_64               1:1.6.0.41-1.13.13.1.el7_3 local    
java-1.7.0-openjdk.x86_64                   1:1.7.0.251-2.6.21.1.el7   local    
java-1.7.0-openjdk-accessibility.x86_64     1:1.7.0.251-2.6.21.1.el7   local    
java-1.7.0-openjdk-demo.x86_64              1:1.7.0.251-2.6.21.1.el7   local    
java-1.7.0-openjdk-devel.x86_64             1:1.7.0.251-2.6.21.1.el7   local    
java-1.7.0-openjdk-headless.x86_64          1:1.7.0.251-2.6.21.1.el7   local    
java-1.7.0-openjdk-javadoc.noarch           1:1.7.0.251-2.6.21.1.el7   local    
java-1.7.0-openjdk-src.x86_64               1:1.7.0.251-2.6.21.1.el7   local    
java-1.8.0-openjdk.i686                     1:1.8.0.242.b08-1.el7      local    
java-1.8.0-openjdk.x86_64                   1:1.8.0.242.b08-1.el7      local    
java-1.8.0-openjdk-accessibility.i686       1:1.8.0.242.b08-1.el7      local    
java-1.8.0-openjdk-accessibility.x86_64     1:1.8.0.242.b08-1.el7      local    
java-1.8.0-openjdk-demo.i686                1:1.8.0.242.b08-1.el7      local    
java-1.8.0-openjdk-demo.x86_64              1:1.8.0.242.b08-1.el7      local    
java-1.8.0-openjdk-devel.i686               1:1.8.0.242.b08-1.el7      local    
java-1.8.0-openjdk-devel.x86_64             1:1.8.0.242.b08-1.el7      local    
java-1.8.0-openjdk-headless.i686            1:1.8.0.242.b08-1.el7      local    
java-1.8.0-openjdk-headless.x86_64          1:1.8.0.242.b08-1.el7      local    
java-1.8.0-openjdk-javadoc.noarch           1:1.8.0.242.b08-1.el7      local    
java-1.8.0-openjdk-javadoc-zip.noarch       1:1.8.0.242.b08-1.el7      local    
java-1.8.0-openjdk-src.i686                 1:1.8.0.242.b08-1.el7      local    
java-1.8.0-openjdk-src.x86_64               1:1.8.0.242.b08-1.el7      local    
java-11-openjdk.i686                        1:11.0.6.10-3.el7          local    
java-11-openjdk.x86_64                      1:11.0.6.10-3.el7          local    
java-11-openjdk-demo.i686                   1:11.0.6.10-3.el7          local    
java-11-openjdk-demo.x86_64                 1:11.0.6.10-3.el7          local    
java-11-openjdk-devel.i686                  1:11.0.6.10-3.el7          local    
java-11-openjdk-devel.x86_64                1:11.0.6.10-3.el7          local    
java-11-openjdk-headless.i686               1:11.0.6.10-3.el7          local    
java-11-openjdk-headless.x86_64             1:11.0.6.10-3.el7          local    
java-11-openjdk-javadoc.i686                1:11.0.6.10-3.el7          local    
java-11-openjdk-javadoc.x86_64              1:11.0.6.10-3.el7          local    
java-11-openjdk-javadoc-zip.i686            1:11.0.6.10-3.el7          local    
java-11-openjdk-javadoc-zip.x86_64          1:11.0.6.10-3.el7          local    
java-11-openjdk-jmods.i686                  1:11.0.6.10-3.el7          local    
java-11-openjdk-jmods.x86_64                1:11.0.6.10-3.el7          local    
java-11-openjdk-src.i686                    1:11.0.6.10-3.el7          local    
java-11-openjdk-src.x86_64                  1:11.0.6.10-3.el7          local    
ldapjdk.noarch                              4.19-5.el7                 local    
ldapjdk-javadoc.noarch                      4.19-5.el7                 local

3.选择64位版本的安装

yum -y install java-1.8.0-openjdk.x86_64

4.检查安装是否成功

安装完成后，执行命令java -version查看是否安装成功

[root@localhost redis-6.2.12]# java -version
openjdk version "1.8.0_242"
OpenJDK Runtime Environment (build 1.8.0_242-b08)
OpenJDK 64-Bit Server VM (build 25.242-b08, mixed mode)

说明安装成功了