二进制运算

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#二进制

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public class TestBinaryarithmetic {
/**
 * 二进制运算演示：
 * 业务：b1,b2,b3,b4拼凑
 * @param args
 */
    public static void main(String[] args) {
        int b1 = 192;
        int b2 = 168;
        int b3 = 1;
        int b4 = 10;
        int ip = (b1<<24)+(b2<<16)+(b3<<8)+b4;
 //b1 = 00000000 00000000 00000000 11000000
 //b2 = -------- -------- -------- 10101000
 //b3 = -------- -------- -------- 00000001
 //b4 = -------- -------- -------- 00001010
 //IP = 11000000 10101000 00000001 00001010
        System.out.println(b1<<24);
        System.out.println(b2<<16);
        System.out.println(b3<<8);
        System.out.println(Integer.toBinaryString(ip));
        int color = 0xD87455;
        int red = 216;
        int green = 116;
        int blue = 85;
        int b = color & 0xff;
        System.out.println(b);
        int g = color>>>8;
        int r = g & 0xff;
        System.out.println(r);
        int d = (color>>>16) &0xff;
        System.out.println(d);
    }

}