Write a Java program that is given as input a string of ASCII characters Ea) Determine if E is a valid predicate logic expression,b) If E is valid, calculate its Boolean value, asking the user to provide values for each predicatevariable. For example, (P1 or P2) implies P3 evaluates to false when P1 is set to true, P2 tofalse, and P3 to false. Problem: Predicate logic expressions form a simple language: they are composed of terms involvingconjunction (and), disjunction (or), implication (implies), biconditional (iff), and negation (not) operators;two constants, "true" and "false"; an infinite set of predicate variables of the form Pn where n is a positiveinteger; and parenthesis. For example, (P1 implies P2) iff P3 or false is a valid expression, but P3 and (P2or) is not.Write a program that is given as input a string of ASCII characters EDetermine if E is a valid predicate logic expression,If E is valid, calculate its Boolean value, asking the user to provide values for each predicatevariable. For example, (P1 or P2) implies P3 evaluates to false when P1 is set to true, P2 tofalse, and P3 to false.a)b)

Algorithm: Read the input string expression and check if it is a valid expression. Create a Scanner…

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Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Write a Java program that is given as input a string of ASCII characters E
a) Determine if E is a valid predicate logic expression,
b) If E is valid, calculate its Boolean value, asking the user to provide values for each predicate
variable. For example, (P1 or P2) implies P3 evaluates to false when P1 is set to true, P2 to
false, and P3 to false.

Problem: Predicate logic expressions form a simple language: they are composed of terms involving
conjunction (and), disjunction (or), implication (implies), biconditional (iff), and negation (not) operators;
two constants, "true" and "false"; an infinite set of predicate variables of the form Pn where n is a positive
integer; and parenthesis. For example, (P1 implies P2) iff P3 or false is a valid expression, but P3 and (P2
or) is not.
Write a program that is given as input a string of ASCII characters E
Determine if E is a valid predicate logic expression,
If E is valid, calculate its Boolean value, asking the user to provide values for each predicate
variable. For example, (P1 or P2) implies P3 evaluates to false when P1 is set to true, P2 to
false, and P3 to false.
a)
b)

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