package main.week03.download.impl;
import main.week03.download.api.Connection;
import main.week03.download.api.ConnectionException;
import main.week03.download.api.ConnectionManager;
//返回接口,是对实现的一种隐蔽
public class ConnectionManagerImpl implements ConnectionManager {
@Override
public Connection open(String url) throws ConnectionException {
Connection res = new ConnectionImpl(url);
return res;
}
}