The equals() method of StringUtils class is a null-safe version of the equals() method of String class , which also handles null values.
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It’s entirely possible for two distinct object instances to be “equal” according to their contract. And then there’s the minor detail that since equals is a method, if you try to invoke it on a null reference, you’ll get a NullPointerException .
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7. == and != The comparison and not equal to operators are allowed with null in Java . This can made useful in checking of null with objects in java.3 Oca 2020
Read moreCan null == null?
If you think of it from a programming (i.e. pointer reference) point of view then, yes, two references of null have the same pointer value and, since most of the popular languages will fall back to pointer-equality if no custom equality is defined, null does equal null .
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