第六次作业

import java.awt.Panel;
import java.awt.ScrollPane;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.HashSet;
import java.util.Random;

import javax.swing.Box;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextArea;

public class Choujiang {
JTextArea t=new JTextArea();
public static void main(String[] args) {
// TODO Auto-generated method stub
new Choujiang().init();

}
public void init(){
    Panel p=new Panel();
    JFrame jf=new JFrame("抽奖系统");
    Box h=Box.createHorizontalBox();
    Box v=Box.createVerticalBox();
    JButton b=new JButton(" 启动");
    A(b);
    p.add(new JLabel("开始抽奖"));
    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(400,400,400,400);
}
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"+values[0] + "
");
     t.append("二等奖号"+values[1]+" " +values[2]+"
");
     t.append("三等奖号"+values[3]+" "+values[4]+" "+values[5]+"
");
     t.append("恭喜获奖者");

    }
     });
     }
     }