intellij s == null returns false on un initialized variable s

Please provide sample code to reproduce.

class Simple {
  String s;
  public Simple(String si) { s = si; }
  public String toString() { return s; }
  public void setString(String sNew) { s = sNew; }
}

class Second {
  Simple simple;
  String s;
  public Second(String si) {
    s = si; // 'simple' not initialized
  }
  public void check() {

    if((simple) == null )
      System.out.println("not initialized");
    else
      System.out.println("initialized");
  }
  public Simple lazy() {
    if(simple == null) {
      System.out.println("Creating Simples");
      simple = new Simple(s);
    }
    return simple;
  }
  public Simple getSimple() { return lazy(); }

  public String toString() {
    return lazy().toString();
  }
  public void setSimple(String sNew) {
    lazy().setString(sNew);
  }
}

public class E01_Composition {

  public  E01_Composition (){


  }
  public static void main(String args[]) {
    Second second = new Second("Init String");
    second.check();

  }
}

when I run main with debug i get initialized in console even though i know it is not initialized

walk through the code and you will wonder why it thinks simple is not null inside check()

when i run the same without debug i get the result i expect to get of not initialized

the outcome is that i get 2 different answers

the run sais it is not initialized

the debug sais that it is

the correct result is the run version

other ide's give the correct answer from the run so i thought it was helpful to submit

i am using build 141.177 March 23, 2015

It's expected behavior of running under debugger when you have enabled toString object view, disable it here:



What happens is that debugger calls toString that initializes your object.

Perfect!

That's it - Fixed!