第六次作业

import java.awt.;
import java.util.;
import javax.swing.;
import java.awt.event.;
public class GUI {
JTextArea t = new JTextArea();
public static void main(String[] args) {
// TODO Auto-generated method stub
new GUI().init();
}
public void init() {
Panel p = new Panel();
JFrame jf = new JFrame("抽奖界面");
Box h = Box.createHorizontalBox();
Box v = Box.createVerticalBox();
JButton b = new JButton("开始");
A(b);
p.add(new JLabel("点击抽奖"));
p.add(b);
v.add(p);
h.add(v);

  ScrollPane sp = new ScrollPane(ScrollPane.SCROLLBARS_AS_NEEDED);
  sp.add(t);
  h.add(sp);
  jf.add(h);
  jf.setVisible(true);
  jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  
  jf.setBounds(400, 200, 400, 400);

}
public void A(final JButton b) {
b.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
Random random = new Random();
Object[] values = new Object[6];
HashSet hashSet = new HashSet();

   for(int i = 0;i < values.length;i++){
       int number = random.nextInt(1000) + 1;
       hashSet.add(number);
   }
   
   values = hashSet.toArray();
   
   t.append("一等奖号码为"+values[0] + "\n");
   t.append("二等奖号码为"+values[1]+" " +values[2]+"\n");
   t.append("二等奖号码为"+values[3]+" "+values[4]+" "+values[5]+"\n");
      
}

});
}
}