mathapplet.java

来自「学生选课 用java和sql server 2000用asp完成的学生选课管理系」· Java 代码 · 共 46 行

/*
 * MathApplet.java
 *
 * 
 */

package sample;
import java.applet.Applet;
import java.awt.*;

public class MathApplet extends java.applet.Applet {
    
    Label la;   
  
    public void init() {      	
        la=new Label(" Please display!  ");

	add(la); // add label to applet(panel)
    	System.out.println("MathApplet init");
    }
    
    public double add(double d1, double d2){  called by ResultApplet
        double sum=d1+d2;
       
        String s=d1+ "+" +d2+ "=" +sum;
        la.setText(s);  //set text on it's Label

        System.out.println("result" + sum);
        return d1 + d2;
    }
    
  /*  public void start(){
           System.out.println("MathApplet start");         
    }
   
    public void stop(){
            System.out.println("MathApplet stop");
    }

    public void destroy(){
            System.out.println("MathApplet destroy");
   }
  */
    
}