如何将类类型分配给泛型类型<T>？

public class GenericClass<T> {
    private T value;

    public void setValue(T value) {
        this.value = value;
    }

    public T getValue() {
        return value;
    }
}

public class Main {
    public static void main(String[] args) {
        GenericClass<String> genericString = new GenericClass<>();
        genericString.setValue("Hello");
        System.out.println(genericString.getValue()); // 输出：Hello

        GenericClass<Integer> genericInteger = new GenericClass<>();
        genericInteger.setValue(123);
        System.out.println(genericInteger.getValue()); // 输出：123
    }
}