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package jcgp.backend.resources;
/**
* Defines the basic model for a console.
* <br><br>
* This interface will typically be implemented by a GUI class
* and GUI packages such as JavaFX are usually single-threaded.
* If the CGP experiment is running on a side thread (which would
* be the case so as not to block the entire GUI), updating a GUI
* element such as the console from a different thread would lead
* to concurrency problems. For this reason, this console is
* intended to buffer printed messages and only output them to the
* actual GUI control when {@code flush()} is called (which is
* guaranteed to be done in a thread-safe way by the library).
*
* @author Eduardo Pedroni
*
*/
public interface Console {
/**
* Prints a string and automatically adds a line break at the end.
*
* @param s the string to print.
*/
public void println(String s);
/**
* Prints a string without line break at the end (unless the string
* itself specifies one).
*
* @param s the string to print.
*/
public void print(String s);
/**
* Outputs all buffered messages to the console. Only necessary
* if concurrent accesses must be avoided.
*/
public void flush();
}
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