Local variable wtf

tookie_tookie

Found this in some Java code:

class Base {
  protected Object reference = null;
public void processStuff() {

reference.someMethod();    // throws null pointer exception here 'cuz only

// the 'reference' in the sub class is set

}

}
class Sub extends Base {

protected Object reference = null;

public void setReference(Object ref) {

reference = ref;

}

}
<SNIP this of layers more several>
Then some method, called on the most sub-classed object, and which is implemented in only the class Base was called:
class SubSub extends Sub {

protected Object reference = null;

public void setReference(Object ref) {

reference = ref;

}
public void callback() {

processStuff();

}

}

tookie_tookie

The above was anonymized to protect my job

impslayer

@tookie tookie said:

The above was anonymized to protect my job

Ah, so YOU wrote the above code...

tookie_tookie

@impslayer said:

@tookie tookie said:
The above was anonymized to protect my job

Ah, so YOU wrote the above code...

Only the post, not the code ;)

Welcome to the Strategy design pattern. Thanks for playing, please try again.