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Linux安装Jdk1.8并配置环境变量

梦幻之云 2022-03-15 阅读 90

1. yum源安装(推荐)

# 检查是否已经存在java相关命令

rpm -qa|grep java

rpm -qa|grep jdk

rpm -qa|grep gcj

# 如果需要卸载

rpm -qa | grep java | xargs rpm -e --nodeps

# 检索Java1.8源列表

yum list java-1.8*

# 安装Java1.8 yum install java-1.8.0-openjdk* -y

# 查询JAVA_HOME

which java

# 返回

/usr/bin/java

# ls -l命令

ls -l /usr/bin/java

# 返回

lrwxrwxrwx 1 root root 22 Nov 13 14:37 /usr/bin/java -> /etc/alternatives/java

# ls -l命令

ls -l /etc/alternatives/java

# 返回 lrwxrwxrwx 1 root root 73 Nov 13 14:37 /etc/alternatives/java -> /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.272.b10-1.el7_9.x86_64/jre/bin/java

# 则JAVA_HOME路径为:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.272.b10-1.el7_9.x86_64

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