linux installation step java
Method 1: yum install download
1. Find a list of related java
yum -y list java*
or
yum search jdk
2, install jdk
yum install java-1.8.0-openjdk.x86_64
3, after installation verification
java -version
4, the default path is installed via yum: / usr / lib / JVM
5, will be added to the installation path jdk JAVA_HOME
vi /etc/profile
In the final document added:
#set java environment
JAVA_HOME=/usr/lib/jvm/jre-1.6.0-openjdk.x86_64
PATH=$PATH:$JAVA_HOME/bin
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export JAVA_HOME CLASSPATH PATHAfter modifying / etc / profile allowed to take effect
. / Etc / Profile (Note . After a space is required)
Second way, the official website to download jdk, ftp server upload extracting installer
1, into the Oracle official website to download the appropriate JDK version, ready to install.
Note: This need to download the Linux version. Here to jdk-8u151-linux-x64.tar.gz example, you download the file may not be this version, it does not matter, as long as the suffix (.tar.gz) can be consistent.
2, create a directory
In /usr/Creating directory javadirectory,
mkdir /usr/local/java cd /usr/local/java
The downloaded file jdk-8u151-linux-x64.tar.gz placed under / usr / local / java / directory.
3. Extract JDK
tar -zxvf jdk-8u151-linux-x64.tar.gz
4. Set Environment Variables
Modify vi / etc / profile
Add the following in the profile file and save it:
set java environment
JAVA_HOME=/usr/local/java/jdk1.8.0_151 JRE_HOME=/usr/local/java/jdk1.8.0_151/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
Note: where JAVA_HOME, JRE_HOME please according to their actual installation path and version of the JDK configuration.
Changes to take effect:
source /etc/profile
5. Test
java -version
Java show version information, then the JDK installation is successful
Method 1: yum install download
1. Find a list of related java
yum -y list java*
or
yum search jdk
2, install jdk
yum install java-1.8.0-openjdk.x86_64
3, after installation verification
java -version
4, the default path is installed via yum: / usr / lib / JVM
5, will be added to the installation path jdk JAVA_HOME
vi /etc/profile
In the final document added:
#set java environment
JAVA_HOME=/usr/lib/jvm/jre-1.6.0-openjdk.x86_64
PATH=$PATH:$JAVA_HOME/bin
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export JAVA_HOME CLASSPATH PATHAfter modifying / etc / profile allowed to take effect
. / Etc / Profile (Note . After a space is required)
Second way, the official website to download jdk, ftp server upload extracting installer
1, into the Oracle official website to download the appropriate JDK version, ready to install.
Note: This need to download the Linux version. Here to jdk-8u151-linux-x64.tar.gz example, you download the file may not be this version, it does not matter, as long as the suffix (.tar.gz) can be consistent.
2, create a directory
In /usr/Creating directory javadirectory,
mkdir /usr/local/java cd /usr/local/java
The downloaded file jdk-8u151-linux-x64.tar.gz placed under / usr / local / java / directory.
3. Extract JDK
tar -zxvf jdk-8u151-linux-x64.tar.gz
4. Set Environment Variables
Modify vi / etc / profile
Add the following in the profile file and save it:
set java environment
JAVA_HOME=/usr/local/java/jdk1.8.0_151 JRE_HOME=/usr/local/java/jdk1.8.0_151/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
Note: where JAVA_HOME, JRE_HOME please according to their actual installation path and version of the JDK configuration.
Changes to take effect:
source /etc/profile
5. Test
java -version
Java show version information, then the JDK installation is successful