Should is blank be public protected or private explain

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Reference no: EM131076809

Consider the following classes:

The class Alg Expr represents algebraic expressions, including prefix, postfix, and infix expressions. Its method is Expression simply examines the expression for valid characters but does not consider the order of the characters. The class InfixExpre presents infix expressions. Its is Expression calls is Blank, and its display calls value Of .

a. Should isBlank be public, protected, or private? Explain.

b. If inExp is an instance of InfixExpr in the main method, can inExp invoke end Expression ? Explain.

c. What small change(s) would you make to the classes to ensure that the correct version of isExpression is called?

Reference no: EM131076809

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