Download Aptitude Crack
img not found img not found

Java.lang Class - Programming

Q1:

What will be the output of the program? 
public class SqrtExample 
{
    public static void main(String [] args) 
    {
        double value = -9.0;
        System.out.println( Math.sqrt(value));
    }
}

A 3.0

B -3.0

C NaN

D Compilation fails.

ANS:A - 3.0

The sqrt() method returns NaN (not a number) when it's argument is less than zero.