import java.awt.*;
import java.applet.Applet;
class aaa{
double f(double x,double y){
return x*y;
}
}
class bbb extends aaa{
double f (double x,double y){
return x+y;
}
}
public class appat extends Applet{
bbb obj;
public void init(){
obj = new bbb();
} public void paint(Graphics g){
g.drawString("the object is "+obj.toString(),5,20);
g.drawString("the pragram's output is "+obj.f(4,6),5,40);
}
}
运行的时候 提示:Exception in thread "main" java.lang.NoSuchMethodError:main 为什么呢????
谢谢各位了。。
import java.applet.Applet;
class aaa{
double f(double x,double y){
return x*y;
}
}
class bbb extends aaa{
double f (double x,double y){
return x+y;
}
}
public class appat extends Applet{
bbb obj;
public void init(){
obj = new bbb();
} public void paint(Graphics g){
g.drawString("the object is "+obj.toString(),5,20);
g.drawString("the pragram's output is "+obj.f(4,6),5,40);
}
}
运行的时候 提示:Exception in thread "main" java.lang.NoSuchMethodError:main 为什么呢????
谢谢各位了。。
Applet可以放在网页当中执行