The null keyword in java programming language is a reserved word that is used to represent no value. Keywords are basically reserved words which have specific meaning relevant to a compiler.
Syntex: Here is the syntax that displays how to declare and define null values in java programming language.
a = null;
if (str != null)
Note: Here are some points that must be considered while declaring and assigning a value to a variable.
Assigning a null value to a non-primitive type variable releases the object to which the variable previously referred.
Primitive data types such as byte,
short, int, long, char, float, double, boolean cannot have a null type.
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