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The values of boxed primitives cannot be compared using the == and != operators by default. This is because these are interpreted as reference comparison operators.

Autoboxing can automatically wrap the primitive type to the corresponding wrapper object. Some care should be taken during this process, especially when performing comparisons. The Java Language Specification \[[JLS 05|AA. Java References#JLS 05]\] explains this point clearly:

If the value p being boxed is true, false, a byte, a char in the range \u0000 to \u007f, or an int or short number between -128 and 127, then let r1 and r2 be the results of any two boxing conversions of p. It is always the case that r1 == r2.

Noncompliant Code Example

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