java - 如何将泛型对象作为泛型参数传递给 java 中的其他方法？

Question

我在使用泛型方法时遇到了麻烦

编译类:

public class Something<T> {
   public static Something newInstance(Class<T> type){};
   public <T> void doSomething(T input){};
}

我的方法是:

public <S> void doOtherThing(S input){
      Something smt = Something.newInstance(input.getClass());
      smt.doSomething(input); // Error here
}

编译时出错:

no suitable method found for doSomething(T) T cannot be converted to capture#1 of ? extends java.lang.Object ...

我认为可能有避免这种情况的技巧，请帮忙

Answer 1

将 S 类作为参数传递。

public class Something<T>
{
    public static <T> Something<T> newInstance(Class<T> type)
    {
        return new Something<T>();
    }

    public void doSomething(T input){;}

    public <S> void doOtherThing(Class<S> clazz, S input)
    {
        Something<S> smt = Something.newInstance(clazz);
        smt.doSomething(input);
    }
}