1.抽象类
package com.zpark.service; /**
* 定义一个环境接口,所有省治理环境的方式都实现这个接口,并重写治理环境的方法
* @author tong
*
*/
public interface Environmental {
public void governanceEnvironment();
}
2.实现类
package com.zpark.service.impl; public class BeijingEnvironmental implements Environmental{
@Override
public void governanceEnvironment() {
System.out.println("【北京市治理环境的方法】");
}
}
package com.zpark.service.impl; public class TianjinEnvironmental implements Environmental{
@Override
public void governanceEnvironment() {
System.out.println("【天津市治理环境的方法】");
}
}
package com.zpark.service.impl; public class HebeiEnvironmental implements Environmental{
@Override
public void governanceEnvironment() {
System.out.println("【河北省治理环境的方法】");
}
}
3、简单工厂类
package com.zpark.utils; public class EnvironmentalSimpleFactory {
//根据参数创建对象,这是一个静态方法可以直接使用类名调用
public static Environmental createSalary(String name) {
Class<Environmental> clazz = null;
Environmental salary = null;
try {
//利用反射机制获取该参数对应的类的对象
clazz = (Class<Environmental>) Class.forName(name);
//使用此类对象创建对应的环境类对象,这里使用父类指针指向子类对象,实现了多态
salary = (Environmental)clazz.newInstance();
}catch (Exception e) {
e.printStackTrace();
}
return salary;
}
}
4、测试方法
package com.zpark.test; import org.junit.Test; /**
* @author ceshi
* @Title: ${file_name}
* @Package ${package_name}
* @Description: ${todo}
* @date 2018/6/818:53
*/
public class EnvironmentalJunitTest {
@Test
public void test(){ //创建Client对象,以此对象调用computeSalary()方法传入要类型参数
new EnvironmentalJunitTest().computeSalaryEnvironmental("com.zpark.service.impl.BeijingEnvironmental");
new EnvironmentalJunitTest().computeSalaryEnvironmental("com.zpark.service.impl.HebeiEnvironmental");
new EnvironmentalJunitTest().computeSalaryEnvironmental("com.zpark.service.impl.TianjinEnvironmental"); } /**
* 根据传入的参数调用工厂类的创建环境治理方法,创建不同的薪资对象
* @param name
*/
public void computeSalaryEnvironmental(String name) {
//这里使用多态,根据传入参数的不同,生成ZhejiangSalary或者HebeiSalary对象
Environmental environmental = EnvironmentalSimpleFactory.createSalary(name);
//使用生成的对象动态调用具体类对象的方法
environmental.governanceEnvironment();
}
}
5.测试结果