卸载java8，并安装java17

1.卸载

yum -y remove java-1.8.0-openjdk

2.搜索剩余的文件

rpm -qa | grep java
rpm -qa | grep jdk
rpm -qa | grep openjdk

3.删除其他的文件

sudo yum remove java-1.8.0-openjdk java-1.8.0-openjdk-devel

4.下载压缩包，解压，并转移到喜欢的目录

wget https://builds.openlogic.com/downloadJDK/openlogic-openjdk/17.0.16+8/openlogic-openjdk-17.0.16+8-linux-x64.tar.gz
tar -zxvf jdk-17_linux-x64_bin.tar.gz 
# 将jdk-17改名为java
mv jdk-17 openjdk-17.0.16

5.在etc/profile里添加

export JAVA_HOME=/usr/local/openjdk-17.0.16
export PATH=$PATH:$JAVA_HOME/bin;
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib;

6.刷新配置

source /etc/profile