Discussion Forum : Introduction To Methods And Streams
Question -
class isNaN_output {
public static void main(String args[]) {
Double d = new Double(1 / 0.);
boolean x = d.isNaN();
System.out.print(x);
}
}
What is the output of this program?
class isNaN_output {
public static void main(String args[]) {
Double d = new Double(1 / 0.);
boolean x = d.isNaN();
System.out.print(x);
}
}
Answer: Option D
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isisNaN() method returns true is the value being tested is a number. 1/0. is infinitely large in
magnitude, which cant not be defined as a number hence false is stored in x.
Output:
$ javac isNaN_output.java
$ java isNaN_output
false
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