1. java方法的泛型,也可以由返回值決定,比如下面的代碼。
public static <T> T getBean(String name) throws BeansException
{
return (T) beanFactory.getBean(name);
}
// 由Summary hotDataBucketSizeSummary決定getBean的泛型
Summary hotDataBucketSizeSummary = SpringUtils.getBean("hotDataBucketSizeSummary");