1     public class ByteToBinary {   2         /**  3          * 把byte数组转化成2进制字符串  4          * @param bArr  5          * @return  6          */   7         public String getBinaryStrFromByteArr(byte[] bArr){   8             String result ="";   9             for(byte b:bArr ){  10                 result += getBinaryStrFromByte(b);  11             }  12             return result;    13         }  14         /** 15          * 把byte转化成2进制字符串 16          * @param b 17          * @return 18          */  19         public String getBinaryStrFromByte(byte b){  20             String result ="";  21             byte a = b; ;  22             for (int i = 0; i < 8; i++){  23                 byte c=a;  24                 a=(byte)(a>>1);//每移一位如同将10进制数除以2并去掉余数。  25                 a=(byte)(a<<1);  26                 if(a==c){  27                     result="0"+result;  28                 }else{  29                     result="1"+result;  30                 }  31                 a=(byte)(a>>1);  32             }  33             return result;  34         }  35           36         /** 37          * 把byte转化成2进制字符串 38          * @param b 39          * @return 40          */  41         public String getBinaryStrFromByte2(byte b){  42             String result ="";  43             byte a = b; ;  44             for (int i = 0; i < 8; i++){  45                 result = (a % 2) + result;  46                 a=(byte)(a>>1);  47             }  48             return result;  49         }  50           51         /** 52          * 把byte转化成2进制字符串 53          * @param b 54          * @return 55          */  56         public String getBinaryStrFromByte3(byte b){  57             String result ="";  58             byte a = b; ;  59             for (int i = 0; i < 8; i++){  60                 result = (a % 2) + result;  61                 a = (byte) (a/2);  62             }  63             return result;  64         }  65     }