1, 下载安装包 jdk-11.0.15.1_linux-x64_bin.tar.gz

下载地址： Java Downloads | Oracle

2，解压JDK

# 创建目录
mkdir /usr/local/java
# 解压文件到指定目录
tar -zxvf ./jdk-11.0.15.1_linux-x64_bin.tar.gz -C /usr/local/java

3，配置环境变量

# 打开配置文件
vi /etc/profile

# 在文件末尾添加
export JAVA_HOME=/usr/local/java/jdk-11.0.15.1
export PATH=$JAVA_HOME/bin:$PATH

# 刷新环境变量
source /etc/profile

4，测试安装结果

java -version

备注：

1. 创建软链接

# 创建软链接
ln -s /usr/local/java/jdk-11.0.15.1/bin/java /usr/bin

2. No appropriate protocol (protocol is disabled or cipher suites are inappropriate)
javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate

修改文件/usr/local/java/jdk-11.0.15.1/conf/security/java.security, 重启项目

# 原内容
jdk.tls.disabledAlgorithms=SSLv3, TLSv1, TLSv1.1, RC4, DES, MD5withRSA, \
    DH keySize < 1024, EC keySize < 224, 3DES_EDE_CBC, anon, NULL, \
    include jdk.disabled.namedCurves

# 修改后， 去掉SSLv3, TLSv1, TLSv1.1, 
jdk.tls.disabledAlgorithms=RC4, DES, MD5withRSA, \
    DH keySize < 1024, EC keySize < 224, 3DES_EDE_CBC, anon, NULL, \
    include jdk.disabled.namedCurves

3.-bash: /usr/local/java/jdk-11.0.15.1/bin/java: cannot execute binary file: Exec format error

# 命令
uname -a

# 返回结果
5.10.112-11.al8.aarch64 #1 SMP Tue May 24 15:43:21 CST 2022 aarch64 aarch64 aarch64 GNU/Linux

如果有aarch64，需要更换安装包jdk-11.0.15.1_linux-aarch64_bin.tar.gz