java – (Generics)不能对非静态类型T进行静态引用

定义方法将包含带参数的返回类型方法名称

newInstance的返回类型是< T> SomeClass< T>对我来说似乎很奇怪
因为我的班级被称为SomeClass< T>而不是< T> SomeClass< T>

why do i need the <T> in front of the SomeClass<T> ?
it seems that if I don’t include it there will be an common error
called Cannot make a static reference to the non-static type T

另一件要指出的是,我可以在< T>之间放置许多空格.和SomeClass< T>所以看起来他们不需要在一起.

public class SomeClass<T> {

    public static <T>SomeClass<T> newInstance(Class<T> clazz){
        return new SomeClass<T>(clazz);
    }

    private SomeClass(Class<T> clazz){
        System.out.println("hello");
    }
}

public class Demo {

    public static void main(String args[])
    {
        SomeClass<String> instance = SomeClass.newInstance(String.class);
    }
}