java inter-process communication

is it possible to use run a java class in command line to run a certain class or function in a running swing?

such as , when j开发者_运维百科ava Test asd will setText a running swing Jlabel to asd

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The two programs run in separate processes. You will need to create an interface between the processes (or as Matthew put it: implement inter-process communication). There are millions of ways to achieve this, just to name a few:

• Create a file-based interface (Test will write into a file and JLabel will read that file)
• Create a TCP/IP connection between the two
• Create a HTTP connection between the two (JLabel may run a glassfish thread or something like that)
• Create a JMS connection
• Create an RMI method call
• Create a Webservice (again with JLabel running glassfish)
• Many more...

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The most straight forward way is to create an RMI method call.

It's built into java from the beginning, reasonably simple and lightweight.