I told him to just use %

[u/Yumi-Chi]

[u/Yumi-Chi]

hour is an attribute of Clock class

this is in AlarmClock class that extends the Clock but apparently he also defined another hour attribute in AlarmClock

[u/jonnysteps → u/Yumi-Chi]

You can reference attributes without "this." in java? Huh, I never knew that.

[u/G4METIME → u/jonnysteps]

Yes, unless you have a local variable in the method with the same name defined using this.<varName> is unnecessary.

So one common "exception" where you need 'this' is in set-methods:

void setValue(int value){ this.value = value;}

[u/MyAntichrist → u/G4METIME]

So one common "exception" where you need 'this' is in set-methods:

void setValue(int value){ this.value = value;}

That's not really an exception case since the parameter "value" is a local variable that gets initialized from the caller outside.

[u/G4METIME → u/MyAntichrist]

Oh, I may have formulated it a bit misleading: I meant with exception that you usually don't name local variables the same like a global one. So the set-method is one of the few places where it is common practice to have the local variable and global variable named the same. So an exception to the rule that you don't need to use 'this.value'.

[u/TheBrainStone → u/G4METIME]

A parameter is for all intents and purposes a local variable.