vertify.java

基于面向对象的数据库编程

package helper;

public class Vertify {

  static public  double  ZERO=0;

  public Vertify() {
  }

static public  void  vertify   (double x) throws Exception {
   System.out.print(x);
   if (x<=ZERO) {
   throw new Exception ();
   }

 }

static  public void  vertify   (double x,double y) throws Exception {
   if ((x<=ZERO)||(y<=ZERO)){
     throw new Exception ();
   }

 }
static  public void  vertify   (double x,double y,double z) throws Exception {
   if ((x<=ZERO)||(y<=ZERO)||(z<=ZERO))
    {
     throw new Exception ();
    }
 }


}