The command line
Install the JRE on Ubuntu and Linux Mint
Open a terminal, using the following command to install JRE:
- sudo apt-get install default-jre
OpenJDK installed on Ubuntu and Linux Mint
In the end, use the following command to install OpenJDK Java Development Kit:
- sudo apt-get install default-jdk
Special, if you want to install Java 7 Java 6 or so on, you can use openjdk-7-jdk / openjdk-6jdk, but keep in mind before installing openjdk-7-jre / openjdk-6-jre.
By installation package
1. Download jdk.
2, verify java installation, use the java -version command, described below is not installed as shown:
3. Unzip the downloaded installation package
4, configure the system environment variables, edit / etc / profile file, add it at the end of the file information:
export JAVA_HOME=/usr/jdk1.8.0_101
export JRE_HOME=$JAVA_HOME/jre
export CLASSPATH=.:$CLASSPATH:$JAVA_HOME/lib:$JRE_HOME/lib
export PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
export JAVA_HOME = / usr / jdk-8 is disposed in the main directory jdk
export JRE_HOME = $ JAVA_HOME / jre jre directory configuration
export CLASSPATH =:. $ CLASSPATH: $ JAVA_HOME / lib: $ JRE_HOME / lib directory is configured CLASSPATH
export PATH = $ PATH: $ JAVA_HOME / bin: $ JRE_HOME / bin directory of the jdk executable files added to the system directory system environment
As shown below:
5, using the source / etc / profile command to make the information just is configured, as shown below:
6, again using the java -version command to verify, as shown below:
