In Java, null is a reserved word for literal values . It seems like a keyword, but actually, it is a literal similar to true and false.
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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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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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No , null is not an object .It is a reference type and its value does not refer to any object and so there is no representation of null in memory.
Read moreHow do you check if an object is null in Python?
There’s no null in Python; instead there’s None . As stated already, the most accurate way to test that something has been given None as a value is to use the is identity operator , which tests that two variables refer to the same object.
Read moreIs null or empty check?
You can use the IsNullOrWhiteSpace method to test whether a string is null , its value is String. Empty, or it consists only of white-space characters.
Read moreIs null or empty in Java?
isEmpty(String str) – Checks if a String is empty (“”) or null. StringUtils. isBlank(String str) – Checks if a String is whitespace, empty (“”) or null. For non-Java users like myself; be sure to include import org.
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