Java 简单工厂模式

首先 定义一接口

package com.org;
 
public interface SampleInterface {
    public void print(String s);
}

定义两个接口的实现类

package com.org.impl;
 
import com.org.SampleInterface;
 
public class ImpleOne implements SampleInterface {
 
    @Override
    public void print(String s) {
        // TODO Auto-generated method stub
        System.out.println(s);
    }
 
}

package com.org.impl;
 
import com.org.SampleInterface;
 
public class ImpleTwo implements SampleInterface {
 
    @Override
    public void print(String s) {
        // TODO Auto-generated method stub
        System.out.println(s);
    }
 
}

定义一工厂类 实现对象的创建

package com.org.factory;
 
import com.org.SampleInterface;
import com.org.impl.ImpleOne;
import com.org.impl.ImpleTwo;
 
public class Factory {
    public static SampleInterface getImple(String str){
        if("one".equals(str)){
            return new ImpleOne();
        }
        else{
            return new ImpleTwo();
        }
    }
}

测试类

package com.org.test;
 
import com.org.SampleInterface;
import com.org.factory.Factory;
 
public class Test {
 
    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        SampleInterface face = Factory.getImple("one");
        face.print("Hello World");
        face = Factory.getImple("two");
        face.print("wa wa");
    }
 
}