java动态实例化类

采用接口可以动态实现相同结构的类的实例化

/** * @功能描述：    动态实例化事件类 * @param className    类的全路径 * @return flowEvent是className类的接口 */public flowEvent initEvent(String className){        flowEvent event = null;        try {                event = (flowEvent) Class.forName(className).newInstance();        } catch (InstantiationException e) {                e.printStackTrace();        } catch (IllegalAccessException e) {                e.printStackTrace();        } catch (ClassNotFoundException e) {                e.printStackTrace();        }        return event;}

也可以使用Object来实例化,此种方式无需依赖自定义接口实现,如：

public Object initBusinessDataBean(String className){        Object obj = null;        try {                obj = Class.forName(className).newInstance();        } catch (InstantiationException e) {                e.printStackTrace();        } catch (IllegalAccessException e) {                e.printStackTrace();        } catch (ClassNotFoundException e) {                e.printStackTrace();        }        return obj;}