example3_2.java

来自「书中的例题」· Java 代码 · 共 30 行

 import javax.swing.*;
 class Dataloading
 {
  double distance(double x , double y)
	{
      double d=Math.sqrt(x*x+y*y);
	  return d;
   }
  double distance(double x , double y ,double z ) 
	{
     double d=Math.sqrt(x*x+y*y+z*z);
	 return d;
	}
 }

 public class Example3_2
 {
   public static void main(String args[])
   {
     Dataloading dis=new Dataloading();
     double d1=dis.distance(2,3);
     double d2=dis.distance(3,4,5);
	 JOptionPane.showMessageDialog(null,
		               "接受二个参数：平面距离 d="+d1+"\n"
	                   +"接受三个参数：平面距离 d="+d2 );
		System.exit(0);
   }
   }