一个类是否可以从调用其方法的外部类中捕获信息？

Other other = new Other(this);
// or
other.doSomething(this);

public void doSomething() {
    StackTraceElement caller = Thread.currentThread().getStackTrace()[2];
    String callerClassName = caller.getClassName();
    // ...
}

class A
{

   private Object a;

   {
      // Arbitrary code executed each time an instance of A is created.
      System.out.println("Hey, I'm a brand new object!");
      System.out.println("I get called independently of any constructor call.");
   }

   static
   {
      // Arbitrary *static* code
      System.out.println("Some static initialization code just got executed!");
   }

   public A()
   {
      // Plain-Jane constructor
      System.out.println("You're probably familiar with me already!");
   }
}