位运算：

~（非）——》二进制数进行0和1的互换

样例：

public class Test {

	public static void main(String[] args) {

		System.out.println(~-2);//输出1

		System.out.println(~-1);//输出0

		System.out.println(~0);//输出-1

		System.out.println(~1);//输出-2

		System.out.println(~2);//输出-3

		System.out.println(~3);//输出-4

	}

}

^（异或）——》12 ^ 10 = ...01100^01010 =  00110 = 6

样例：

public class Test {

	public static void main(String[] args) {

		int a = 0;

		int b = 0;

		b = a = 12^10;

		System.out.println(a);//输出为 6

		a = a^12;

		System.out.println(a);//输出为 10

		b = b^10;

		System.out.println(b);//输出为 12

	}

}

应用：二个不同的数进行交换

public class Test {

	public static void main(String[] args) {

		int a = 12;

		int b = 10;

		System.out.println(a + "---" + b);// 输出为12---10

		a = a ^ b;

		b = a ^ b;

		a = a ^ b;

		System.out.println(a + "---" + b);// 输出为10---12

	}

}

&（与）——》12 & 10 = ...01100 & 01010 = 01000 = 8

样例：

public class Test {

	public static void main(String[] args) {

		int a = 12;

		int b = 10;

		int c = a&b;

		System.out.println(c);//输出为 8

	}

}

应用：

public class Test {

	public static void main(String[] args) {

		int[] a = new int[2];

		a[0] = 5;

		a[1] = 6;

		for (int i = 0; i < a.length; i++) {

			if ((a[i] & 1) == 1) {// 推断是否为奇数

				System.out.println(a[i] + "奇数");

			} else {

				System.out.println(a[i] + "偶数");

			}

		}

		// 输出为：

		// 5"奇数"

		// 6"偶数"

	}

}

|（或）——》12 | 10 = ...01100 | ...01010 = 01110 = 14

样例：

public class Test {

	public static void main(String[] args) {

		int a = 12;

		int b = 10;

		// ...01100 | ...01010 = 01110 = 14

		int c = a | b;

		System.out.println(c);// 输出为14

	}

}

应用：和位移一起运算能够打包成不同位数的整数

public class Test {

	public static void main(String[] args) {

		int a = 1;

		int b = 2;

		// 256 | 2 = ...01 0000 0000 | ...0010 = ...01 0000 0010 = 258

		int c = a << 8 | b;

		System.out.println(c);// 输出为258

	}

}

>>（右位移）——》12>>2 = 00...01100 >>2 = 00...00011 = 3

-1 >>>24 = 1111...111 >>>24 = 1111...1111 1111 = -1

>>>（无符号）——》 -1 >>> 24 = 1111...111 >>> 24 = 0000...1111 1111 = 255

public class Test {

	public static void main(String[] args) {

		int a = -1;

		// 1111...111 >>> 24 = 0000...1111 1111 = 255

		int b = a>>>24;

		System.out.println(b);// 输出为255

	}

}

12>>2 = 00...01100 >>2 = 00...00011 = 3