templateMethod(模板方法模式)

MakeCar.java

package edu.hhxy;
/*
* 组装车
*/
public abstract class MakeCar {
//组装车头
public abstract void makeHead();

//组装车身
public abstract void makeBody();

//组装车尾
public abstract void makeTail();

public void make() {
this.makeHead();
this.makeBody();
this.makeTail();
}
}

MakeBus.java

package edu.hhxy;

public class MakeBus extends MakeCar {

public void makeBody() {
System.out.println("bus:组装车身");
}

public void makeHead() {
System.out.println("bus:组装车头");
}

public void makeTail() {
System.out.println("bus:组装车尾");
}
}

MakeJeep.java

package edu.hhxy;

public class MakeJeep extends MakeCar {

public void makeBody() {
System.out.println("jeep:组装车身");
}

public void makeHead() {
System.out.println("jeep:组装车头");
}

public void makeTail() {
System.out.println("jeep:组装车尾");
}

}

MakeKa.java

package edu.hhxy;

public class MakeKa extends MakeCar {

public void makeBody() {
System.out.println("ka:组装车身");
}

public void makeHead() {
System.out.println("ka:组装车头");
}

public void makeTail() {
System.out.println("ka:组装车尾");
}

}

MainClass.java

package edu.hhxy;

public class MainClass {
public static void main(String[] args) {
MakeCar bus = new MakeBus();
//        bus.makeHead();
//        bus.makeBody();
//        bus.makeTail();
bus.make();

System.out.println("-------------------");

MakeCar jeep = new MakeJeep();
//        jeep.makeHead();
//        jeep.makeBody();
//        jeep.makeTail();
jeep.make();

System.out.println("-------------------");

MakeCar ka = new MakeKa();
ka.make();
}
}

以下采用Spring配置方式

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <bean id="makeBus" class="edu.hhxy.MakeBus" />
<bean id="makeJeep" class="edu.hhxy.MakeJeep" />
<bean id="makeKa" class="edu.hhxy.MakeKa" />
</beans>

采用junit进行测试（MakeCarClassTest）（通过接口接收getBean，接收的bean可以是接口的实现类，需要哪个实现类，就get哪个实现类，低耦合）

package edu.hhxy;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MakeCarClassTest {
@Test
public void getCar() {
ApplicationContext ctx = new ClassPathXmlApplicationContext(
"applicationContext.xml");
MakeCar makeCar = (MakeCar) ctx.getBean("makeBus");
System.out.println(makeCar);
}
}