This demo shows how LCDjava can be used in a project that periodically updates the display. It uses a Thread that gets the current time, formats it and displays it on the LCD using LCDproc Big Numbers. The thread then sleeps for a second (compensated for computational and thread-release delays) and starts over until interrupted.
It uses SLF4J's Simple Logger implementation, which just sends all log messages to STDERR.
This is a Maven project. mvn compile to build the code and mvn package to make a JAR (this project only, without its dependencies).
To run it using Maven's exec plugin, use a command line like the following. This will make sure that all dependencies are available in the classpath before running.
$ mvn exec:java
Usage: java BigClock <LCD host> <LCD port>
$ mvn exec:java -Dexec.args="192.168.1.171 13666"
[local.lcdjava_demos.BigClockDemo.main()] INFO org.boncey.lcdjava.LCD - Connected
Connected to LCDd: Version = 0.5.7; protocol version = 0.3; width = 20; height = 4; cell width = 5; cell height = 8
Press Ctrl+C to exit
^C[Thread-1] DEBUG org.boncey.lcdjava.LCD - Shutdown requested
[Thread-1] DEBUG org.boncey.lcdjava.LCD - Waiting for LCDSocketPoller to terminate...
[Thread-2] DEBUG org.boncey.lcdjava.LCDSocketPoller - Terminating
[Thread-1] DEBUG org.boncey.lcdjava.LCD - Closing socket