code for Retrieving the Supported File Extensions of a Scripting Engine

import java.util.List;

import javax.script.ScriptEngineFactory;
import javax.script.ScriptEngineManager;


public class FileExtensionsDemo {
public static void main(String[] args) {
ScriptEngineManager manager = new ScriptEngineManager();
List factories = manager.getEngineFactories();
for (ScriptEngineFactory factory : factories) {
List ext = factory.getExtensions();
for (int i = 0; i < ext.size(); i++) {
System.out.printf("Supported file extension: " + (String) ext.get(i) + "\n");
}
}
}
}