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package com.bradley.bit ;
public class Bit {
public static void printBit ( ) {
int n = 1 ;
System . out . println ( 1 < < 32 ) ;
System . out . println ( 1 < < 31 ) ;
System . out . println ( 1 < < 30 ) ;
System . out . println ( 1 < < 29 ) ;
// 1 用二进制表示 32bit ==> 00000000 00000000 00000000 00000001 1*2^0 = 1
// 1 左移32位 ==> 10000000 00000000 00000000 000000000 0*2^0 = 0
// 1 左移31位 ==> 01000000 00000000 00000000 00000000 1*2^31 = 2147483648 4294967296 超出int范围：
// 1 左移30位 ==> 00100000 00000000 00000000 00000000 1*2^30 = 1
// 1 左移29位 ==> 00010000 00000000 00000000 00000000 1*2^29 = 1
}
public static void main ( String [ ] args ) {
// System.out.println(Integer.MAX_VALUE);
printBit ( ) ;
}
}
