java - 如何自定义泛型？

Question

我有一个这样的界面:

public interface BeanCreator<T> {   
   public T createBean();
   public Class<T> getClazz();
}

我试着定制它:

public class CustomizedBeanCreator<T> implements BeanCreator<T>{

    @Override
    public T createBean() {
        CustomizedBean bean = new CustomizedBean();
        bean.setId(-2323);
        bean.setName("this bean is created by a customized creator");       
        @SuppressWarnings("unchecked")
        T t = (T)bean;      
        return t;
    }

    @SuppressWarnings("unchecked")
    @Override
    public Class<T> getClazz() {
        return (Class<T>) CustomizedBean.class;
    }
}

因为那两个@SuppressWarnings，我感到不舒服。

我应该怎么做才能修复它？

谢谢!

Answer 1

更改签名(和实现)来自

public class CustomizedBeanCreator<T> implements BeanCreator<T>{

类似于

public static class CustomizedBeanCreator implements BeanCreator<CustomizedBean> {

    @Override
    public CustomizedBean createBean() {
        CustomizedBean bean = new CustomizedBean();
        bean.setId(-2323);
        bean.setName("this bean is created by a customized creator");
        return bean;
    }

    @Override
    public Class<CustomizedBean> getClazz() {
        return CustomizedBean.class;
    }
}