double和long互转

Java中Double和Long互相转换

public class LongAndDouble {
 
    /**
     * @param args
     */
    public static void main(String[] args) {
        double d = 88.88;
        long l = Math.round(d);
        System.out.println(l);
        
        long ll = 100L;
        double dd = (double) ll;
        System.out.println(dd);
    }
}