Please create a program in java for evaluating arithmetic expressions in postfix (reverse Polish) notation.

Design Specifications:

- create a java project project5 and a package 5.

- read your postfix expression from a file expression.txt using the Scanner class. The numbers in the expression should be double values.

- Use the java.util.Stack class(http://download.oracle.com/javase/1.5.0/docs/api/java/util/Stack.html).

- Accept the following operations: +, -, *, /.

- Make sure that you do not divide by 0.

- Make sure that your stack is empty after evaluating the expression.

- Output should be to standard output.

- Create and implement a driver class.

Sample Output:

5 9 8 + 4 6 * * 7 + * = 2075.

Rubric:

- Input

a) Project reads expression files.

b) Project correctly recognizes numbers as double.

c) Project correctly recognizes arithmetic operators.

- Output

a) Calculations return the correct answer.

b) Program handles division by 0.

c) Program returns error for too many operators.

d) Program returns error for too many operands.

- Calculations and Implementation

a) Addition.

b) Subtraction.

c) Multiplication.

d) Division.

e) Use of Stack object as stack.

f) Use of scanner class

Thank you for your help!