For example, look at this code:
Integer myInt = new Integer(5);
int i1 = myInt.intValue();
int i2 = myInt;
System.out.println(i1);
System.out.println(i2);
As you can see, I have two ways of copying my integer value from the wrapper to the primive:
I can use unboxing,
OR
I can use the method Integer#intValue()
.
So what's the need of having a method when there is already unboxing?
Unboxing was introduced in Java 5. The wrappers (including this method) have been there since the original release.
A link to the Javadoc
In that time (1996) we did need the intValue()
method and as Oracle guarantees backward backwards compatibility... up to a certain level (it is not always 100% on major releases).
The method has to stay in.
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