编写代码模拟手机与SIM卡的组合关系
package test1;
public class Phone {
SIM sim;
void setSIM(SIM card){
sim=card;
}
long lookNumber(){
return sim.getNumber();
}
}
public class SIM {
long number;
SIM(long number){
this.number=number;
}
long getNumber(){
return number;
}
}
package test1;
public class Test {
public static void main(String[] args) {
SIM simone=new SIM(15563000960l);
Phone phone=new Phone();
phone.setSIM(simone);
System.out.println("手机号码"+phone.lookNumber());
SIM simtwo=new SIM(18753706418l);
phone.setSIM(simtwo);
System.out.println("更换手机号码为"+phone.lookNumber());
}
}
