/*** 抽象模板角色*/
public abstract class AbstractClass {//基本方法protected abstract void operation();//基本方法2protected abstract void operation2();//模板方法public void templateMethod(){//调用基本方法,完成相关逻辑this.operation();this.operation2();}}/*** 具体模板角色*/
public class ConcreteClass extends AbstractClass{//实现基本业务方法
    @Overrideprotected void operation() {//业务逻辑System.out.println("具体类的操作");}@Overrideprotected void operation2() {//业务逻辑System.out.println("具体类的操作2");}
}public class Client {public static void main(String[] args) {AbstractClass ac = new ConcreteClass();//调用模板方法
        ac.templateMethod();}
}

/*** 抽象模板,抽象账户类*/
public abstract class Account {//账号private String accountNumber;//构造函数public Account(){accountNumber = null;}public Account(String accountNumber) {this.accountNumber = accountNumber;}/*** 基本方法,确定账户类型,留给子类实现* @return*/protected abstract String getAccountType();/*** 基本方法,确定利息,留给子类实现* @return*/protected abstract double getInterestRate();/*** 基本方法,根据账户类型和账户确定账户金额* @param accountType* @param accountNumber* @return*/public double calculateAmount(String accountType,String accountNumber){//访问数据库...此处直接返回账户金额return 10000.00D;}//模板方法,计算账户利息public double calculateInterest(){String accountType = getAccountType();double interestRate = getInterestRate();double amount = calculateAmount(accountType,accountNumber);return amount*interestRate;}}/*** 具体模板类,活期账户*/
public class DemandAccount extends Account {@Overrideprotected String getAccountType() {return "活期";}@Overrideprotected double getInterestRate() {return 0.003D;}}/*** 具体模板类,定期账户*/
public class FixedAccount extends Account {/*** 基本方法,确定账户类型* @return*/protected String getAccountType() {return "一年定期";}/*** 基本方法,确定利息* @return*/protected double getInterestRate() {return 0.04D;}
}/*** 测试类*/
public class ClientAccount {public static void main(String[] args) {Account account = new DemandAccount();System.out.println("活期账户利息:"+account.calculateInterest());account = new FixedAccount();System.out.println("一年定期账户利息:"+account.calculateInterest());}
}