Float isNaN() 样例

/* * boolean isNaN(float f) static method checks whether the agrument * PRimitive float value is Not-a-Number value or not. It return true if * the specified argument is Not-a-Number value, false otherwise. */ float f = (float) Math.sqrt(-10); System.out.println(f); boolean b1 = Float.isNaN(f); System.out.println(b1);