android工厂类

package com.ithm.lotteryhm28.util;

import java.io.IOException;
import java.util.Properties;

import com.ithm.lotteryhm28.engine.UserEngine;

/** * 工厂类 * @author Administrator * */
public class BeanFactory {
    // 依据配置文件加载实例

    private static Properties properties;
    static{
        properties=new Properties();
        // bean.properties必须在src的跟目录下
        try {
            properties.load(BeanFactory.class.getClassLoader().getResourceAsStream("bean.properties"));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }


    /** * 加载需要的实现类 * @param clazz * @return */
    public static<T> T getImpl(Class<T> clazz)
    {
        String key=clazz.getSimpleName();//clazz.getName()
        String className = properties.getProperty(key);
        try {
            return (T) Class.forName(className).newInstance();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
}

UserEngine=com.sdingba.xxxx.su.impl.UserEngineImpl

    UserEngine engine = BeanFactory.getImpl(UserEngine.class);