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As you know, java.util.Objects is
This class consists of static utility methods for operating on objects.
One of such methods is Objects.isNull().
My understanding is that Objects.isNull() would remove the chance of accidentally assigning a null value to object by omitting the second =.
However, the API Note states:
This method exists to be used as a Predicate, filter(Objects::isNull)
Would there be any reason/circumstance for which I should use object == null over Objects.isNull() in an if statement?
Should Objects.isNull() be confined to Predicates exclusively?
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Overview. The method isNull is a static method of the Objects class in java that checks whether the input object reference supplied to it is null or not. If the passed object is null , then the method returns true . If the passed object is non-null , then the method returns false .
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.
In order to check whether a Java object is Null or not, we can either use the isNull() method of the Objects class or comparison operator.
The nonNull method is a static method of the Objects class in Java that checks whether the input object reference supplied to it is non-null or not. If the passed object is non-null, then the method returns true. If the passed object is null , then the method returns false.
should use object == null over Objects.isNull() in a if statement?
If you look at the source code of IsNull method,
/* Returns true if the provided reference is null otherwise returns false.*/ public static boolean isNull(Object obj) { return obj == null; } It is the same. There is no difference. So you can use it safely.
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