此代码描述了一个物品类good

				public class Good
				{
					String gname;
					int    gid;
					float  gprice;
					
					public void print()
					{
						System.out.println("该商品的名字为"+gname+",ID号"+gid+",价格是"+gprice);
					}
					
					
					public static void main(String args[])
					{
						Good book1=new Good();
						book1.gname="三国演义";
						book1.gid=1001;
						book1.gprice=45.1F;
						book1.print();
						
						Good book2=new Good();
						book2.gname="西游记";
						book2.gid=1002;
						book2.gprice=52.2F;
						book2.print();
						
					}
				}