基础问题之程序三行报错信息请解释

Question

public class Game { /**  * @param args  */ public static void main(String[] args) {  // TODO 自动生成的方法存根  Scanner = new Scanner.in;  int v = (Math.random()*100+1);  int a = in.nextInt();        int count = 0;        {if (a>v){         System.out.println("偏大");        }else if(a<v){         System.out.println("偏小");        }else if(a==v){         System.out.println("恭喜你，猜对了");        }                 } }}====================================================================上述如下几行报错，求解： Scanner = new Scanner.in;  int v = (Math.random()*100+1);  int a = in.nextInt();