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  • java高级程序设计(第十周)

    本周作业是制作一个抽奖系统不可重复获奖
    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] + "
    ");
       t.append("二等奖号码为"+values[1]+" " +values[2]+"
    ");
       t.append("二等奖号码为"+values[3]+" "+values[4]+" "+values[5]+"
    ");
          
    }
    

    });
    }
    }

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  • 原文地址:https://www.cnblogs.com/2014330122wwh/p/5465026.html
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