Random randomInt=new Random();
       int [] list=new int [20];
        for (int i=0;i<=9;i++)
            list[i]=randomInt.nextInt(111)-100;
        String data="The original list is:\n";
         for (int i=0;i<=9;i++)
        data+=list [i]+" ";
        JOptionPane.showMessageDialog(null, data);
            data="This is the original list backwards:\n";
         for (int i=9;i>=0;i--)
        data+=list [i]+" ";
        JOptionPane.showMessageDialog(null, data);