关于instanceof ,两边类型要有关系,通常左边必有钱类型范围大,右边集成左边的类型。
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      public class BasicTypeTest {    public 
static void main(String[] args) {        Object test = 12;        boolean 
flag = test instanceof 
Integer;//      flag =  instanceof Integer;  //报错        System.out.println(flag);    }} | 
原文地址:http://www.cnblogs.com/baby-bear/p/3699809.html