Hi to All

I am learning Java. I have to write down aprogram in Java which allows the student to select the arithmetic operation one wishes to study. The student chooses from a menu one of three arithmetic operations: 1) addition, 2) subtraction.Based on the student choice, the software tests the user with exactly 10 questions. For each question, two random positive one-digit integers are generated; then the student is asked to enter the answer for the arithmetic operation applied to the two numbers.The software displays a message “Congratulations!” if more that 7 questions are answered correctly, otherwise, the program should display "Please ask your teacher for help". THANKS FOR YOUR "ALWAYS" HELP

This is a clear and general assignment , i can't answer general questions like that , you have to try and then ask what really stopped you .
here a code may help you
Java Calculator