java设计模式：桥接模式抽象化与实现化解耦的理解

interface Driver {
    public void connect();
}

class MysqlDriver implements Driver {
    @Override
    public void connect() {
        System.out.println("连接Mysql数据库");
    }
}
class OracleDriver implements Driver {
    @Override
    public void connect() {
        System.out.println("连接Oracle数据库");
    }
}
//抽象类
abstract class Bridge {
    private Driver driver;
    public void connect() {
        driver.connect();
    }
    public void setDriver(Driver driverTemp) {
        this.driver = driverTemp;
    }
    public Driver getDriver() {
        return this.driver;
    }
}
//实现类
class MyBridge extends Bridge { }
//测试类
public class BridgeTest {
    public static void main(String[] args) {
        Bridge mysqlBridge = new MyBridge();

        Driver mysqlDriver = new MysqlDriver();
        mysqlBridge.setDriver(mysqlDriver);
        mysqlBridge.connect();

        OracleDriver oracleDriver = new OracleDriver();
        mysqlBridge.setDriver(oracleDriver);
        mysqlBridge.connect();
    }
}