Java 反射实例 (二)

第一步： 新建接口，内含eat() 方法

People.java

package com.xuzhiwen.spring2; public interface People { public abstract void eat(); }

第二步：编写两个实现类

Man.java  

package com.xuzhiwen.spring2; public class Man implements People{ @Override public void eat() { System.out.println("man est()..."); } }

Woman.java

package com.xuzhiwen.spring2; public class Woman implements People{ @Override public void eat() { System.out.println("Woman est()..."); } }

第三步：编写工厂类

PeopleFactory.java

package com.xuzhiwen.spring2; public class PeopleFactory { public static People getInstance(String className){ People p = null; try { p = (People) Class.forName(className).newInstance(); } catch (Exception e) { e.printStackTrace(); } return p; } }

第四步：编写测试类

package com.xuzhiwen.spring2; public class TestPeople { public static void main(String[] args) { People p = PeopleFactory.getInstance("com.xuzhiwen.spring2.Woman"); p.eat(); } }

第五步：运行结果如下

 

转载于:https://www.cnblogs.com/beibidewomen/p/7382432.html