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 .21 Ara 2010
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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.
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To check if it is null, we call the isNull() method and pass the object getUserObject as a parameter . It returns true as the passed object is null.
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Is null an Object in Java? No it’s not , and for those who wonder why such a question, there are languages where null is indeed an object like any, for example Ruby. In Scala, which is very meticulous about types, there is a type Null (a trait, actually) having a single instance null .
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Java isNull method with Examples
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