1 package oo.day05; 2 3 4 5 6 7 public interface UnionPayABC{ 8 9 //查询余额 10 double getBalance(); 11 … Continue reading UnionPay
1 package oo.day05; 2 3 4 5 6 7 public interface UnionPayABC{ 8 9 //查询余额 10 double getBalance(); 11 … Continue reading UnionPay