Environmental preparation (1)
JDK environment preparation
table of Contents
JDK environment variable configuration
Verify that the JDK is installed successfully
Download JDK
Address: www.oracle.com/technetwork/java/javase/downloads/index.html
Install JDK
Set the installation location yourself
JDK environment variable configuration
This computer——>Properties——>Advanced System Settings——>Advanced——>Environment Variables——>System Variables
(1) Create a new JAVA_HOME variable, the variable value is C:\Program Files\Java\jdk1.8.0_144 ( JDK installation path )
(2) Create a new classpath variable, the variable values are %JAVA_HOME%\lib\tools.jar and %JAVA_HOME%\lib\dt.jar .
(3) Add the Path variable, the variable values are %JAVA_HOME%\bin and %JAVA_HOME%\jre\bin .
Verify that the JDK is installed successfully
(1) Method 1: Go to the installation directory to see if the installation is successful
(2) Method 2: View through console commands
(3) View through the control panel
Uninstall JDK
Uninstall the control panel
supplement
JDK (Java Development Kit)-Java Development Kit
JRE (Java Runtime Environment)-Java runtime environment