How to Install JAVA 8 on CentOS 7

 Bước 1: Download

cd /opt/
wget https://v4u.vn/files/jdk-8u212-linux-x64.tar.gz
tar xzf jdk-8u212-linux-x64.tar.gz

Bước 2: Install Java 8 with Alternatives

cd jdk1.8.0_212/
alternatives --install /usr/bin/java java /opt/jdk1.8.0_212/bin/java 2
alternatives --config java
alternatives --install /usr/bin/jar jar /opt/jdk1.8.0_212/bin/jar 2
alternatives --install /usr/bin/javac javac /opt/jdk1.8.0_212/bin/javac 2
alternatives --set jar /opt/jdk1.8.0_212/bin/jar
alternatives --set javac /opt/jdk1.8.0_212/bin/javac

Bước 3: Check Installed Java Version
java -version

Bước 4: Setup Java Environment Variables

export JAVA_HOME=/opt/jdk1.8.0_212
export JRE_HOME=/opt/jdk1.8.0_212/jre
export PATH=$PATH:/opt/jdk1.8.0_212/bin:/opt/jdk1.8.0_212/jre/bin

Chúc các bạn thành công!