Question

What is the result of 2^7 in Java? Why does it give this result? What would you use to get the result you would have expected before taking this class?

Answer 1

What is the result of 2^7 in Java?

Answer is : 128.0

Why does it give this result?

Math.pow(2,7) return the double value.

Math.pow(first,second); first argument raised to the power of the second argument.

2*2*2*2*2*2*2 = 128.0 return double, Not integer.

What would you use to get the result you would have expected before taking this class?

System.out.println(2*2*2*2*2*2*2); 2 multiply by itself, 7 times( you get the integer result)