Use of Boolean type operations &=,|= and ^= in Java

today, when you code review your colleagues, you see a more playful notation. "Flag &= false;", at first glance, still feel he wrote wrong, but the program can run normally, hurriedly go to Baidu, look at this writing exactly is how one thing, originally this and ordinary common-=,+= and so on is the same, but usually use less only, This is really a lifting cock silk feelings of the weapon, at least can not see this kind of writing do not know what the meaning of it.

The code is as follows:

public class Mainmethod {public static void main (string[] args) {Boolean flag = true;        Flag &= true;        System.out.println ("true\t&=\ttrue\t==>\t" + flag);        Flag = true;        Flag &= false;         System.out.println ("true\t&=\tfalse\t==>\t" + flag);        Flag = false;        Flag &= true;         System.out.println ("false\t&=\ttrue\t==>\t" + flag);        Flag = false;        Flag &= false;                 System.out.println ("false\t&=\tfalse\t==>\t" + flag+ "\ n");        Flag = true;        Flag |= true;        System.out.println ("true\t|=\ttrue\t==>\t" + flag);        Flag = true;        Flag |= false;         System.out.println ("true\t|=\tfalse\t==>\t" + flag);        Flag = false;        Flag |= true;         System.out.println ("false\t|=\ttrue\t==>\t" + flag);        Flag = false;        Flag |= false;                 System.out.println ("false\t|=\tfalse\t==>\t" + flag+ "\ n"); System.out.println ("^= the same is true, different is false");        Flag = true;        Flag ^= true;        System.out.println ("true\t^=\ttrue\t==>\t" + flag);        Flag = true;        Flag ^= false;         System.out.println ("true\t^=\tfalse\t==>\t" + flag);        Flag = false;        Flag ^= true;         System.out.println ("false\t^=\ttrue\t==>\t" + flag);        Flag = false;        Flag ^= false;     System.out.println ("false\t^=\tfalse\t==>\t" + flag); }}

The results of the implementation are as follows:
true &= true ==> truetrue &= false ==> falsefalse &= true ==> falsefalse &= false ==> falsetrue |= true ==> truetrue |= false ==> truefalse |= True ==> truefalse |= false ==> false^= The same is true, the difference is falsetrue ^= true ==> falsetrue ^= false ==> truefalse ^= True ==> truefalse ^= false ==> false

Use of Boolean type operations &=,|= and ^= in Java