检查参数原始双精度值是否为无穷大

public class Main {

 

  public static void main(String[] args) {
  /**
   from
  * nowjava 
  **/

    double d = (double) 4/0;

    boolean b1 = Double.isInfinite(d);

    System.out.println(b1);

 

    Double dObj = new Double(d);

    boolean b2 = dObj.isInfinite();

    System.out.println(b2);

 

  }

}