CentOS7安装JAVA JDK

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安装JAVA_JDK准备

1. 检查是否安装JDK

   rpm -qa|grep -E '^open[jre|jdk]|j[re|dk]'
   

2. 卸载已安装JDK

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

YUM安装JAVA_JDK

1. yum安装jdk

   yum search java|grep jdk
   yum install java-1.8.0-openjdk
   

2. 环境变量配置

   vim /etc/profile
   
   export JRE_HOME=$JRE_HOME:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.212.b04-0.el7_6.x86_64/jre
   export JAVA_HOME=$JAVA_HOME:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.212.b04-0.el7_6.x86_64
   export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JRE_HOME/lib
   export PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
   
   ESC
   :wq
   

3. 检查安装是否成功

   java -version
   
   java version "1.8.0_101"
   Java(TM) SE Runtime Environment (build 1.8.0_101-b13)
   Java HotSpot(TM) 64-Bit Server VM (build 25.101-b13, mixed mode)
   

源码安装JAVA_JDK

1. 命令行下载 JDK8

   cd /root
   wget --no-check-certificate --no-cookies \
   --header "Cookie:oraclelicense=accept-securebackup-cookie" \
   http://download.oracle.com/otn-pub/java/jdk/8u131-b13/jdk-8u131-linux-x64.tar.gz
   

2. 解压并配置环境变量

   tar -zxvf jdk-8u131-linux-x64.tar.gz
   mv /root/jdk1.8.0_101 /usr/local/jdk
   
   vim /etc/profile
   
   export JAVA_HOME=$JAVA_HOME:/usr/local/jdk
   export JRE_HOME=$JRE_HOME:/usr/local/jdk/jre
   export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JRE_HOME/lib
   export PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
   
   ESC
   :wq
   
   source /etc/profile
   

3. 检查安装是否成功

   java -version
   
   java version "1.8.0_101"
   Java(TM) SE Runtime Environment (build 1.8.0_101-b13)
   Java HotSpot(TM) 64-Bit Server VM (build 25.101-b13, mixed mode)
   

JAVA下载大全

JAVA jdk8

1. macOS x64

2. Windows x86

3. Windows x64

4. Linux ARM 64 RPM Package

5. Linux ARM 32 Hard Float ABI

6. Linux ARM 64 Compressed Archive

7. Linux x86 RPM Package

8. Linux x64 RPM Package

9. Linux x86 Compressed Archive

10. Linux x64 Compressed Archive

11. Solaris x64

12. Solaris x64 (SVR4 package)
13. Solaris SPARC 64-bit
14. Solaris SPARC 64-bit (SVR4 package)

JAVA jdk15

1. macOS Installer

2. macOS Compressed Archive

3. Windows x64 Installer

4. Windows x64 Compressed Archive

5. Linux ARM 64 RPM Package

6. Linux ARM 64 Compressed Archive

7. Linux x64 RPM Package

8. Linux x64 Debian Package
9. Linux x64 Compressed Archive