The equals() method of StringUtils class is a null-safe version of the equals() method of String class , which also handles null values.
Read moreCan we use equals with null?
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 .
Read moreCan you do == null in Java?
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 .
Read moreIS null check in JavaScript?
Javascript null is a primitive type that has one value null. JavaScript uses the null value to represent a missing object. Use the strict equality operator ( === ) to check if a value is null . The typeof null returns ‘object’ , which is historical bug in JavaScript that may never be fixed.
Read moreHow do you check for blank and null in JavaScript?
Checking for only null or undefined can be done like so: if (value == null) . Mind the == operator that coerces. If you check like this if (value === null || value === undefined) , you forgot/don’t know how Javascript coerces.
Read moreCan a double be null in Java?
Java primitive types (such as int , double , or float ) cannot have null values , which you must consider in choosing your result expression and host expression types.
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