我的JAVA运算符简记录

1. “&” 双1为1 (长的像8(爸),一副严格的样子,必须两个1才是1)

int a = 13;
int b = 23;
int c = a & b;
System.out.println(a + " " + Integer.toBinaryString(a));
System.out.println(b + " " + Integer.toBinaryString(b));
System.out.println(c + " " + Integer.toBinaryString(c));

结果:

13  1101
23 10111
5 	 101

2. “|” 有1则1 (虽说是单身狗, 但是一直渴望成双)

int d = 10;
int e = 21;
int f = d | e;
System.out.println(d + "  " + Integer.toBinaryString(d));
System.out.println(e + " " + Integer.toBinaryString(e));
System.out.println(f + " " + Integer.toBinaryString(f));

结果:

10  1010
21 10101
31 11111

3. “~” 取反减1 (渣女大波浪, 十足的大反派)

System.out.println(Integer.MAX_VALUE + " " + Integer.MIN_VALUE);
System.out.println(~Integer.MAX_VALUE == (Integer.MIN_VALUE));
System.out.println("~-11111: " + (~-11111));

结果:

2147483647 -2147483648
true
~-11111: 11110

4. “^” 单1则1 (这位是单身单出了瘾…)

System.out.println(Integer.toBinaryString(21));
System.out.println(" "+Integer.toBinaryString(10));
System.out.println(21 ^ 10);

结果:

10101
 1010
31