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Java

Posted by Tommy Choe
Tommy Choe
38,156 Points

I don't understand the concept of upcasting or downcasting in Java.

I don't think I understand the concept of casting in general. I'm so used to Python where we don't have to declare/change types.

Can anyone explain it to me in detail? Thanks!

1 Answer

Luke Glazebrook
Luke Glazebrook
13,564 Points
Luke Glazebrook
Luke Glazebrook
13,564 Points

Hi Tommy!

Types are declared in Java so that the variable knows what it is supposed be holding. Like you say this isn't required in a language like Python but has to be stated in Java.

As part of Java as well you have to give the variable the same data type as what you stated it would hold. If you don't then your program will not run until you fix the issue.

I hope that I managed to clear this up for you a bit!

Tommy Choe
Tommy Choe
38,156 Points

Thanks for the explanation Luke!