java模式之桥接模式

来源：互联网发布：微信里淘宝免单的群编辑：程序博客网时间：2024/06/06 19:23

1.2.5 桥接模式：桥接就是把事物与具体实现分开，使他们可以独自变化。

例子：数据库中的驱动链接就是这个原理，首先有这么一个数据库的驱动管理类，然后有一些驱动类（oracledriver，mysqldriver，等等），通过把不同的驱动设置到管理者中使用即可；

package com.sj.bridge;public interface Driver {public void connect();}

package com.sj.bridge;public class MysqlDriver implements Driver{@Overridepublic void connect() {System.out.println("mysql driver connect");}}

package com.sj.bridge;public class OracleDriver implements Driver{@Overridepublic void connect() {System.out.println("oracle driver connect");}}

桥接者

package com.sj.bridge;public class DriverManager {private Driver driver;public Driver getDriver() {return driver;}public void setDriver(Driver driver) {this.driver = driver;}public void connect() {driver.connect();}}

测试类

package com.sj.bridge;public class Test {public static void main(String[] args) {Driver driver = new MysqlDriver();DriverManager driverManager = new DriverManager();driverManager.setDriver(driver);driverManager.connect();driver = new OracleDriver();driverManager.setDriver(driver);driverManager.connect();}}

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