msg.java

java写的简单的cs模式的im程序

import java.io.Serializable;
import java.util.Date;


public class Msg  implements Serializable{
	protected int type;
	protected String from;
	protected String to;
	protected Date time;
	protected String content;
	
	public static int MSG = 0;
	public static int HANDSHAKE = 1;
	public static int TEST = 2;
	public static int OK = 4;
	public static int LIST = 8;
	public static int EXIT = 16;
	


	public Msg(){
	}
	public Msg(int tp, String f, String t, String c){
		type = tp;
		from = f;
		to = t;
		time = new Date();
		content = c;
	}
	public Msg(String f, String t, String c){
		type = MSG;
		from = f;
		to = t;
		time = new Date();
		content = c;
	}
	
	public static Msg HANDSHAKEMSG(String name){
		return new Msg(HANDSHAKE,name,"server","Hello!");
	}
	public static Msg TESTMSG(String name){
		String to;
		if(name == "server") to = "client";
		else to = "server";
		return new Msg(TEST,name,to,"Is you are here?");
	}
	public static Msg OKMSG(String name){
		String to;
		if(name == "server") to = "client";
		else to = "server";
		return new Msg(OK,name,to,"Yes!");
	}
	public static Msg LISTMSG(String name){
		String to;
		if(name == "server") to = "client";
		else to = "server";
		return new Msg(LIST,name,to,"List all the client.");
	}
	public static Msg LISTMSG(String name, String list){
		String to;
		if(name == "server") to = "client";
		else to = "server";
		return new Msg(LIST,name,to,"Clients on this server are :\n"+list);
	}
	public static Msg EXITMSG(String name){
		String to;
		if(name == "server") to = "client";
		else to = "server";
		return new Msg(EXIT,name,to,"I'll exit.");
	}
	
	public void settype(int tp){
		type = tp;
	}
	public void setfrom(String f){
		from = f;
	}
	public void setto(String t){
		to = t;
	}
	public void settime(Date d){
		time = d;
	}
	public void setcontent(String c){
		content = c;
	}
	
	public int gettype(){
		return type;
	}
	public String getfrom(){
		return from;
	}
	public String getto(){
		return to;
	}
	public Date gettime(){
		return time;
	}
	public String getcontent(){
		return content;
	}
	
	public String toString(){
		String str = "From:"+from+"\nTo:"+to+"\nMessage:\n"+content;
		return str;
	}

}