Write an interactive java program for evaluating postfix expressions. The program will allow the user to enter a postfix expression from the keyboard. Assume the expression is entered correctly. Output to the screen the stack evaluation (showing the stack) after each step and final expression value. Finally, promptthe user if he/she wishes to perform another calculation or quit the program. Check case. The program must use a stack data structure. Refer to the sample output below. Sample Run:Enter a postfix expression: 4 5 2 * + Stack Contents: After push operation: 4 After push operation: 4 5 After push operation: 4 5 2 After * operation: 4 10 After + operation: 14 Final Value: 14 Enter another expression (Y/N)? y Enter an infix expression: 5 7 + 6 2 - * Stack Contents:After push operation: 5 After push operation: 5 7 After + operation: 12 After push operation: 12 6 After push operation: 12 6 2 After - operation: 12 4 After * operation: 48 Final Value: 48 Enter another expression (Y/N)? N
Write an interactive java program for evaluating postfix expressions. The program will allow the user to enter a postfix expression from the keyboard. Assume the expression is entered correctly. Output to the screen the stack evaluation (showing the stack) after each step and final expression value. Finally, promptthe user if he/she wishes to perform another calculation or quit the program. Check case. The program must use a stack data structure.
Refer to the sample output below.
Sample Run:Enter a postfix expression: 4 5 2 * +
Stack Contents: After push operation: 4
After push operation: 4 5
After push operation: 4 5 2
After * operation: 4 10
After + operation: 14
Final Value: 14
Enter another expression (Y/N)? y
Enter an infix expression: 5 7 + 6 2 - *
Stack Contents:After push operation: 5
After push operation: 5 7
After + operation: 12
After push operation: 12 6
After push operation: 12 6 2
After - operation: 12 4
After * operation: 48
Final Value: 48
Enter another expression (Y/N)? N
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