//演示基本數據類型和封裝數據類型的轉換
class CapsuleTest
{
	public static void main(String[] args)
	{
		int i = 3;
		Integer in = new Integer(i);
		System.out.println(in);
		String str = in.toString();
		System.out.println(str);
		System.out.println(Integer.valueOf(str));
	}
}