import javax.activation.CommandInfo;
import javax.activation.MailcapCommandMap;
public class Main {
public static void main(String[] args) {
MailcapCommandMap mailcapCommandMap = new MailcapCommandMap();
String[] mimeTypes = mailcapCommandMap.getMimeTypes();
for (String mimeType : mimeTypes) {
System.out.println(mimeType);
CommandInfo[] commandInfos = mailcapCommandMap.getAllCommands(mimeType);
for (CommandInfo info : commandInfos) {
System.out.println(" " + info.getCommandName() + " : "
+ info.getCommandClass());
}
}
}
}