Linux安装JDK后提示openjdk

柔情只为你懂 2023-02-17 03:12 27阅读 0赞

1.  在安装了Oracle的jdk之后发现系统带有openjdk会出现下列情况，就是java -version和javac -version会出现不一样的状态
    
     
    
    **\[root@doctortang ~\]\# java -version**
    
    java version "1.7.0\_45"
    
    OpenJDK Runtime Environment (rhel-2.4.3.3.el6-x86\_64 u45-b15)
    
    OpenJDK 64-Bit Server VM (build 24.45-b08, mixed mode)
    
    **\[root@doctortang ~\]\# javac -version**
    
    javac 1.6.0\_45
    
     
    
    [![linux安装jdk后发现系统带有openjdk的处理][linux_jdk_openjdk]][linux_jdk_openjdk_linux_jdk_openjdk]
2.  此时可以查出openjdk相关的文件并且删除它
    
     
    
    **\[root@doctortang ~\]\# rpm -qa |grep java**
    
    java-1.6.0-openjdk-1.6.0.0-1.66.1.13.0.el6.x86\_64
    
    tzdata-java-2013g-1.el6.noarch
    
    java-1.7.0-openjdk-1.7.0.45-2.4.3.3.el6.x86\_64
    
    **\[root@doctortang ~\]\# rpm -e --nodeps java-1.6.0-openjdk-1.6.0.0-1.66.1.13.0.el6.x86\_64**
    
    **\[root@doctortang ~\]\# rpm -e --nodeps java-1.7.0-openjdk-1.7.0.45-2.4.3.3.el6.x86\_64**
    
    **\[root@doctortang ~\]\# rpm -e --nodeps tzdata-java-2013g-1.el6.noarch**
    
     
    
    [![linux安装jdk后发现系统带有openjdk的处理][linux_jdk_openjdk 1]][linux_jdk_openjdk_linux_jdk_openjdk 1]
3.  此时查询java -version会出现错误，而查询javac -version则没有问题
    
     
    
    **\[root@doctortang ~\]\# java -version**
    
    \-bash: /usr/bin/java: 没有那个文件或目录
    
    **\[root@doctortang ~\]\# javac -version**
    
    javac 1.6.0\_45
    
     
    
    [![linux安装jdk后发现系统带有openjdk的处理][linux_jdk_openjdk 2]][linux_jdk_openjdk_linux_jdk_openjdk 2]
4.  此时执行source命令让之前配置过jdk环境的profile文件再次生效
    
    **\[root@doctortang ~\]\# source /etc/profile**
    
    [![linux安装jdk后发现系统带有openjdk的处理][linux_jdk_openjdk 3]][linux_jdk_openjdk_linux_jdk_openjdk 3]
5.  此时即可看到成功了
    
     
    
    **\[root@doctortang ~\]\# java -version**
    
    java version "1.6.0\_45"
    
    Java(TM) SE Runtime Environment (build 1.6.0\_45-b06)
    
    Java HotSpot(TM) 64-Bit Server VM (build 20.45-b01, mixed mode)
    
    **\[root@doctortang ~\]\# javac -version**
    
    javac 1.6.0\_45
    
     
    
    [![linux安装jdk后发现系统带有openjdk的处理][linux_jdk_openjdk 4]][linux_jdk_openjdk_linux_jdk_openjdk 4]

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