Is there an easy way of passing Linux/Unix commands to Java’s args[] during program execution? I would like to use Java app with cron.
Is there an easy way of passing Linux/Unix commands to Java’s args[] during program
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Is there an easy way of passing Linux/Unix commands to Java’s args[] during program execution? I would like to use Java app with cron.
The JVM already does that for you:
In args[] you will have the command line arguments.
If you want more sofistication (as named parameters, v.g. -title = MyTitle), you can try Apache Command Line Interface(CLI) library.
EDIT to answer featon’s comment: That will not work, the OS will interpret it as a call to launch a new process. Also, the process name of all java processes is “java” (the OS runs the JVM and does not know what it does in inside).
If what you want is to communicate with a Java process already running, you must open a communication path. Two alternatives are:
Another path is getting to use J2EE application server that implement functionalities more oriented to Java process that run continuously (even equivalents to cron tasks), but they take some effort to become familiar with.