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Java Java Objects (Retired) Harnessing the Power of Objects Helper Methods and Conditionals

Posted by John Fowler
John Fowler
7,913 Points

Constructor Parameters

Why are we able to set mBarsCount to zero inside the constructor class when we've set its parameters to take Strings, not integers?

1 Answer

Evan Demaris
Evan Demaris
64,262 Points

Hi John,

The constructor is designed to require a value be provided every time a class is instantiated. In this case, there shouldn't be a default color for a go kart, so you have to tell it which color you want. Bars starting at zero is a property of the instantiated object, but it's not one that's required to define to create a go kart - the instance created will default to no bars.

Basically, the parameters are what are required for that constructor. If you wanted to make a second constructor which took both a string to define the color and an int for the battery bars, you could, then you could either call goKart("blue"); or goKart("blue", 8); if you wanted it to start off with a charged battery.

Hope that helps!

John Fowler
John Fowler
7,913 Points

Wow, that was a crazy good answer. Thanks!!!