JAVA defines a telephone class. Define methods to realize the functions of calling, sending short messages and sending multimedia messages respectively, and ask powerful JAVA experts for help.

private int telNum

Private int type; //0 SMS, 1 MMS, 3 phone calls

Private string message;

Int telNum (int type, string message) (

this.telNum = telNum

this.type = type

this.message = message

}

//Send SMS

Private void sendMessage(int telNum, string message) (

}

//Send MMS

private void sendColor(int telNum，String message){

}

//Call

Private synchronous invalid call (int telnum) (

}

//Turn off the phone

Private void closeTel(){

}

Public invalid operation () {

if(type==0){

sendMessage(this.telNum，this . message)；

}

if(type== 1){

sendColor(this.telNum，this . message)；

}

if(type==2){

call(int telNum)；

} else { closeTel()； }

}

}