if a method returns a Double, why would we call the method “doubleValue” on it? it already returns a double and in calculations, appears to evaluate correctly.
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if a method returns a Double, why would we call the method “doubleValue” on it? it already returns a double and in calculations, appears to evaluate correctly.
Prior to Java 1.5 auto-boxing (and unboxing) didn’t exist in Java. So, you would need this to extract the underlying primitive from a Double.
If you are unfamiliar with auto-boxing, you can read more here.
http://docs.oracle.com/javase/1.5.0/docs/guide/language/autoboxing.html