What support for Java exists?
CDEV supports both java applications and java applets. Applets communicate with the control system through the cdevGateway, and applications may use the gateway or native method calls. • How does the Java code talk to EPICS? Support for EPICS is currently through the cdevGateway. This gateway can support thousands of requests per second, and should not be a performance bottleneck (if it were, multiple gateways could be used). The gateway makes calls into the native control system. It would be possible to provide an alternate implementation using native methods, possibly also using java wrappers to channel access. • What about Java Beans? There is a java package (adm) which sits above java CDEV and provides the following types of beans: • a CDEV invisible bean, to connect the control system to any other bean (such as commercial beans) • CDEV versions of many AWT beans, allowing simple drag and drop within java development environments • custom graphical beans from the older package, JDM
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