Method initMessage

drg_group/guangxi_2022/Messages.java:9–11

(String index)

public class Messages {
    private ConcurrentHashMap<String,List<String>> messages=new ConcurrentHashMap<String,List<String>>();
    public void initMessage(String index){
        messages.put(index, new ArrayList<String>());
    }
    public void putMessage(String index,String message){
        messages.get(index).add(message);
    }