Infinite and Not A Number

isInfinite( ) returns true if the value being tested is infinitely large or small in magnitude. isNaN( ) returns true if the value being tested is not a number.

Using the following methods you can find out if a float value is infinite value or it is not a number(NaN).

boolean isInfinite(): Returns true if this Float value is infinitely large in magnitude, false otherwise.
static boolean isInfinite(float v): Returns true if the specified number is infinitely large in magnitude, false otherwise.
boolean isNaN(): Returns true if this Float value is a Not-a-Number (NaN), false otherwise.
static boolean isNaN(float v): Returns true if the specified number is a Not-a-Number (NaN) value, false otherwise.


public class Main {
  public static void main(String[] args) {
    Float floatObject2 = Float.valueOf((float)0.0/(float)(0.0));
    System.out.println(floatObject2);
    System.out.println("isInfinite:"+floatObject2.isInfinite());
    System.out.println("isNaN:"+floatObject2.isNaN());
    
  }
}

The output:


NaN
isInfinite:false
isNaN:true


public class Main {
  public static void main(String[] args) {
    Float floatObject2 = Float.valueOf(1/(float)(0.0));
    System.out.println(floatObject2);
    System.out.println("isInfinite:"+floatObject2.isInfinite());
    System.out.println("isNaN:"+floatObject2.isNaN());
    
  }
}

The output:


Infinity
isInfinite:true
isNaN:false

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