JAVA REVERSE POLISH NOTATION

**QQ=**ONP Problem - CodeChef
**MY SOLUTION=**CodeChef: Practical coding for everyone
**TYPE OF ERROR=**WRONG ANSWER
IN MY integrated BLUEJ ENVIRONMENT OUTPUT IS COMINg IN NUMBERS for the given test cases
PLZ explain my mistake

first: you dont have to print anything like “enter number” etc

second:i think your algorithm is wrong

hint:try to solve it using stack