Tutorial on installing and configuring the Java environment in Ubuntu16.04, ubuntu16.04java

Tutorial on installing and configuring the Java environment in Ubuntu16.04, ubuntu16.04java

1. Download jdk.

2. Verify that java is installed. Use the java-version Command, as shown in:

3. Create a jdk-8 directory in the usr directory, as shown in:

4. configure system environment variables, edit the/etc/profile file, and add the following information at the end of the file:

Export JAVA_HOME =/usr/jdk1.8.0 _ 101

Export JRE_HOME = JAVAHOME/jreexportCLASSPATH =.: "role =" presentation "> JAVAHOME/jreexportCLASSPATH =.: JAVAHOME/jreexportCLASSPATH =.: CLASSPATH: JAVAHOME/lib: "role =" presentation "> JAVAHOME/lib: JRE_HOME/lib

Export PATH = PATH: "role =" presentation "> PATH: JAVA_HOME/bin: $ JRE_HOME/bin

Export JAVA_HOME =/usr/jdk-8 is the main directory for configuring jdk

Export JRE_HOME = $ JAVA_HOME/jre is the directory for jre Configuration

Export CLASSPATH =.: CLASSPATH: "role =" presentation "> CLASSPATH: JAVA_HOME/lib: $ JRE_HOME/lib is the configured CLASSPATH directory.

Export PATH = PATH: "role =" presentation "> PATH: JAVA_HOME/bin: $ JRE_HOME/bin: add the jdk executable file directory to the system environment directory.

As shown in:

6. Use the source/etc/profile command to make the configuration take effect, as shown in:

7. Use the java-version command again for verification, as shown in: