Untitled

long _start_time;
int _click_count;

String[] luckteexttt = {"你今日好黑仔","你今日都幾唔好彩","你今日正正常常","你今日都幾好運","你今日好好運喎"}; 
String lucknumber[] ={"幸運指數 : ★","幸運指數 : ★★","幸運指數 : ★★★","幸運指數 : ★★★★","幸運指數 : ★★★★★"};

int[] luckstart = {1,2,3,4,5};
Random r =new Random();

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         

    int i = r.nextInt(luckstart.length);

    int randomNumber = r.nextInt(luckteexttt.length);
    lucktext.setText(luckteexttt[i]);
    
    if(luckstart[i]== 1) lucknumberhi.setForeground(Color.GRAY);
    if(luckstart[i]== 2) lucknumberhi.setForeground(Color.ORANGE);
    if(luckstart[i]== 3) lucknumberhi.setForeground(Color.YELLOW);
    if(luckstart[i]== 4) lucknumberhi.setForeground(Color.lightGray);
    if(luckstart[i]== 5) lucknumberhi.setForeground(Color.MAGENTA);
    
    lucknumberhi.setText(lucknumber[luckstart[i]-1]);
   
    
    if (_click_count == 0)
         _start_time = System.currentTimeMillis();
    
    _click_count++;
    
   if (System.currentTimeMillis() - _start_time < 100) // before 10s
   {
          if (_click_count >= 20)
          {
              _click_count = 0;
              jButton1.setEnabled(false);
          }
  }
   
        else // after 10s
        {
            _click_count = 1;
            _start_time = System.currentTimeMillis();
        }

    }