Question

能否检索一个方法/施工者的打电话?

This question has already been posted, but each time the answers are talking about caller Class (using stacktrace) and not caller instance. If a solution exists, it can be really convenient to build object graph (with a common super type) and handle parent child navigation with default constructor.

public class TestCallStack {
    public static class BaseClass {
        BaseClass owner;
//      //ok, this is the correct way to do it
//      public BaseClass(BaseClass owner) {
//          this.owner = owner;
//      }
        public BaseClass() {
            //this.owner = ???????; 
        }
    }
    public static class Parent extends BaseClass {
        Child child = new Child();
    }
    public static class Child extends BaseClass {
    }

    public static void main(String[] args) {
        Parent parent = new Parent();
        System.out.println(parent.child.owner==parent); // must be true
    }
}

Answer 1

你的感觉是正确的——这是不可能的。我个人认为,“od是一件事,因为这样会使法典在重新定位方面变得非常脆弱(将一些法典删除为固定方法——突然没有任何电动物体)。

如果你想表达某种所有权人关系,你应明确规定该所有人。

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