I really need help with the recursive version. Java

uses two different stacks. The second version must be based on recursion. This means that you have to replace the explicit use of stacks (in the first version) by using recursion (that implicitly uses the JVM runtime stack). Your arithmetic calculators must read lines of text from a text file, where each line contains a syntactically correct arithmetic expression. Your output file must repeat the input line and print the computed result on the next line. Your calculators must support the following operators on integer or real numbers and observe the standard operator precedence as shown below (1-8, highest to lowest; same precedence evaluated left to right). 1. Parentheses (possibly nested ones): (,) unary operators 2. factorial: ! 3. minus: - binary operators 4. power function: x 5. operators: *,/ 6. operators: +, - 7. operators: >,>, 5,,>, 5,