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Java

Posted by Aaron Coursolle
Aaron Coursolle
18,014 Points

In IntelliJ Idea, what does "Extract Variable" do?

And how does it know how to replace "SongRequest.getSong()" with "song"?

Aaron Coursolle
Aaron Coursolle
18,014 Points

When performing the operation, "song" was chosen automatically. We weren't offered any other choice.

1 Answer

Jacob Bergdahl
Jacob Bergdahl
29,119 Points

I don't know what video or challenge you are referring too, but extract variable creates a variable from an expression.

Example:

        int i = 0;
        if (i != 0) {

        }

If you extract the variable in the above expression, you can get:

        int i = 0;
        boolean b = i != 0;
        if (b) {

        }

In other words, you create a new variable. I hope this clears it up :)