How is the 'this' variable in Java actually set to the current object?

Question

Consider:

class TestParent{
  public int i = 100;
  public void printName(){
    System.err.println(this); //{TestChild@428} according to the Debugger.
    Syste         


        

Answer 1

Well when a new object is created that object has an address in memory so you can think of it as if the object had a private member this that is set to the address when the object is created. You can also think of it like this: obj.method(param) is just syntactic sugar for method(obj, param); and this is actually a parameter of method.