fractionapplet.java

书籍《JAVA面向对象程序设计》书籍的课后源代码。相信对很多人都有帮助

///////    FractionApplet.java    ///////
package myrmi.fra; 

import java.awt.Container; 
import java.rmi.Naming; 
import java.rmi.RemoteException; 
import javax.swing.*; 

public class FractionApplet extends JApplet
{   public void init()
    {   try 
        {   obj = (FractionAdd)Naming.lookup("//" + 
                 getCodeBase().getHost() + "/FractionServer"); 
            
            a = new Fraction(1,3);
            b = new Fraction(1,5);
            ans = obj.add(a, b); 
        } catch (Exception e) { 
            System.out.println("FractionApplet exception: " + 
                                    e.getMessage()); 
            e.printStackTrace(); 
        } 
        Container cp = getContentPane();
        cp.add(new JLabel("" +a+ " + " +b+ " = " + ans, JLabel.CENTER));
    } 

    // "obj" is the identifier that we'll use to refer 
    // to the remote object that implements the "FractionAdd" 
    // interface 
    FractionAdd obj = null; 
    Fraction a, b, ans;
}