centos下jdk、jre安裝
1.在/usr/目錄下創建java目錄
[[email protected] ~]# mkdir/usr/java
[[email protected] ~]# cd /usr/java
2.下載jdk,然後解壓
http://download.oracle.com/otn-pub/java/jdk/8u144-b01/090f390dda5b47b9b721c7dfaa008135/jdk-8u144-linux-x64.tar.gz?AuthParam=1507435402_60cf411062e7197de41768be28f4fccf
[[email protected] java]# tar -zxvf jdk-8u144-linux-x64.tar.gz
3.設置環境變量
[[email protected] java]# vi /etc/profile
在profile中添加如下內容:
#set java environment
JAVA_HOME=/usr/java/jdk1.8.0_144
JRE_HOME=/usr/java/jdk1.8.0_144/jre
CLASS_PATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
export JAVA_HOME JRE_HOME CLASS_PATH PATH
讓修改生效:
[[email protected] java]# source /etc/profile
4.驗證JDK和jre有效性
[[email protected] ~]# java -version
java version "1.8.0_144"
Java(TM) SE Runtime Environment (build 1.8.0_144-b01)
Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)
[[email protected] ~]# javac -version
javac 1.8.0_144
centos下jdk、jre安裝