Java如何创建类型实例

/**

 * 使用工厂方法来创建实例

 *

 * @param <T>

 */

interface Factory<T>{

    T create();

}

class Creater<T>{

    T instance;

    public <F extends Factory<T>> T newInstance(F f) {

     instance=f.create();

     return instance;

    }

}

class IntegerFactory implements Factory<Integer>{

    @Override

    public Integer create() {

     Integer integer=new Integer(9);

     return integer;

    }

}