JDK download
Official website: https://www.oracle.com/java/technologies/javase-jdk8-downloads.html
Baidu network disk:
Link: https://pan.baidu.com/s/1lSsmv5k1yNSHFzrVlqi8_g
Extraction code: uzmj
Install JDK
Remember the installation path! !
Remember the installation path! !
Remember the installation path! !
Configure environment variables
For Java program development, the two commands of JDK are mainly used: javac.exe, java.exe, the main path: C: \ Java \ jdk 1.7.0 _09 \ bin [mainly the bin directory, the JDK you install Find under the directory]
Then go to configure environment variables, computer-property-advanced system settings
Configure environment variables
New- > variable name "JAVA_HOME", variable value "C: \ Java \ jdk1.8.0_05" (that is, JDK installation path)
Edit- > variable name "Path", add ";% JAVA_HOME" at the end of the original variable value % \ bin;% JAVA_HOME% \ jre \ bin "
New- > Variable name" CLASSPATH ", variable value".;% JAVA_HOME% \ lib;% JAVA_HOME% \ lib \ dt.jar;% JAVA_HOME% \ lib \ tools. jar "
Confirm the environment configuration
cmd knock
java -version
