模板方法模式和回调模式

来源：互联网发布：路由器百兆和千兆知乎编辑：程序博客网时间：2024/05/17 23:02

//模板模式----实现编程式事务管理abstract class TransactionTemplate{public void transaction(){beforeTransaction();doInTransaction();afterTransaction();}private void beforeTransaction(){System.out.println("事务开始前");}private void afterTransaction(){System.out.println("事务结束后");}public abstract void doInTransaction();}class MyTransaction extends TransactionTemplate{@Overridepublic void doInTransaction() {System.out.println("进行转账操作");}}public class Demo{public static void main(String [] args){MyTransaction myTransaction=new MyTransaction();myTransaction.transaction();}}

//回调模式----实现编程式事务管理interface InTransaction{public void doInTransaction();}class TransactionTemplate{public void transaction(InTransaction inTransaction){beforeTransaction();inTransaction.doInTransaction();afterTransaction();}private void beforeTransaction(){System.out.println("事务开始前");}private void afterTransaction(){System.out.println("事务结束后");}}public class Demo{public static void main(String [] args){//回调方法模式new TransactionTemplate().transaction(new InTransaction() {@Overridepublic void doInTransaction() {System.out.println("进行转账操作");}});}}

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