1）Installation steps：

Download the appropriate version from the website:

http://www.oracle.com/technetwork/java/javase/downloads/index.html.

Then double click the .exe file to start the installation, and the installation wizard will guide you to finish the installation.

2）Configuration JDK Environment：

• Right click the My Computer icon, then click Properties -> Advanced -> Environment Variables;
• System variable -> New JAVA_HOME variable (Variable values: JDK installation directory. For example: c:\java\jdk1.7.0 );
• System variable -> Path variable -> edit, append to start with:%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin;
• System variable -> New CLASSPATH variable(Variable values : .;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar; )

3）test：

Use command java -version to verify the configuration，for example：