Answer:
num**2
Explanation:
To square a number in Java, you just take the number and use two asterisks (**) to denote an exponent, and then connect a 2 to it.
For example, if your number is 5:
5**2 in Java means 5^2, which is 25.
Just like how 5**3 in Java means 5^3.
Hope this helps.