int占4字节,4*8=32位,10进制取值范围为 (-2^31-1)~(2^31-1):-2147483648~2147483647
1 package test; 2 3 public class test11 { 4 5 public static void main(String[] args) { 6 int a = 2147483647; 7 int a1 = 2147483648;//编译报错 8 int b = -2147483648; 9 int b1 = -2147483649;//编译报错 10 } 11 }