import java.awt.*;
import java.applet.*;
import java.awt.event.*;
public class GetPrimenumber extends Applet implements ActionListener{
/**
*
*/
private static final long serialVersionUID = 1L;
TextField t1=new TextField(5);
TextField t2=new TextField(5);
Button b1=new Button("求素数");
int m,n;
public void init(){
add(t1);
add(t2);
add(b1);
b1.addActionListener(this);
}
public void actionPerformed(final ActionEvent e){
m=Integer.parseInt(t1.getText());
n=Integer.parseInt(t2.getText());
repaint();
}
public void paint(Graphics g){
boolean f;
int i,j,k=0;
for(i=m;i<=n;i++){
f=true;
for(j=2;j<=i-1;j++)
if(i%j==0){f=false;break;}
if(f){
g.drawString(" "+i,(k%10)*20+20,(k/10)*30+80);
k++;
}
}
}
}