是否可以将类内类的实例设置为 null

是否可以将类内类的实例设置为 null。例如，我可以做这样的事情吗

int main{
    //Create a new test object
    Test test = new Test();
    //Delete that object. This method should set the object "test" to null, 
    //thus allowing it to be called by the garbage collector.
    test.delete();

}


public class Test{

    public delete(){
        this = null;
    }
}

我已经尝试过这个，但它不起作用。使用“this = null”我得到左侧需要是变量的错误。有没有办法实现类似的目标？

对象的实例不知道哪些引用可能正在引用它，因此对象中的代码无法将这些引用设为空。你所要求的是不可能的（*）。

* _{at least not without adding a pile of scaffolding to keep track of all the references, and somehow inform their owners that they should be nulled - in no way would it be "Just for convenience".}