![]() Because the null type has no name, it is impossible to declare a variable of the null type or to cast to the null type. There is also a special null type, the type of the expression null, which has no name. ![]() What set does 'null' belong to? JLS 4.1 The Kinds of Types and Values This means that for any type E and R, for any E o, where o = null, o instanceof R is always false. ![]() RelationalExpression instanceof ReferenceTypeĪt run time, the result of the instanceof operator is true if the value of the RelationalExpression is not null and the reference could be cast to the ReferenceType without raising a ClassCastException. ![]() 15.20.2 Type Comparison Operator instanceof RelationalExpression: No, there is no type which null is an instanceof. ![]()
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