I'am trying to create a tool for demonstrating graphs and algorithms. For that purpose I've found GraphStream library. I have read all of its documentation and tutorials but I cant make this one thing work. I am trying to put graph into my custom GUI (left menu with buttons and right graph space) and i managed to do that. Now when i enabled two buttons: generate - creates graph with random generator, and clear - clears graph, it all works fine but after clear when i press generate, i get following error:
Exception in thread "Thread-2" org.miv.pherd.IdAlreadyInUseException: a particle with the same identifier already exists (0)
I dont understand why this is a problem because in my simple test program without gui, i made simple code in main to do the same thing and it works:
public class Test {
public static void main(String[] args){
Graph graph = new SingleGraph("test");
graph.display();
Generator generator = new BarabasiAlbertGenerator();
generator.addSink(graph);
generator.begin();
for (int i = 0; i < 100; i++) {
generator.nextEvents();
}
generator.end();
graph.clear();
generator = new BarabasiAlbertGenerator();
generator.addSink(graph);
generator.begin();
for (int i = 0; i < 100; i++) {
generator.nextEvents();
}
generator.end();
}
this code works but when i execute it within my GUI with buttons i throws error which I have mentioned above. I also checked how many threads are running in my program and it seems 3 of them are. I hope my problem is pretty clear and someone can help me. Thank you all!
