Waveshare E9 User Manual page 19

Waveshare Electronics
Address: Rm 813, Dynamic World Building, Zhenhua Rd, Futian District, Shenzhen, China
TEL: +86-755-83040832 Web: http://www.wvshare.com/
FAX: 86-755-83042572 E-mail: sales@wvshare.com
Input the command in terminal, and then configure the JDK:
update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.6.0_30/bin/java 300
update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.6.0_30/bin/javac 300
update-alternatives --config java
Input the command in terminal java -version, then the JDK version.
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