把byte转化成2进制字符串 .

view plaincopy to clipboardprint?

public class ByteToBinary {
    /**
     * 把byte数组转化成2进制字符串
     * @param bArr
     * @return
     */
    public String getBinaryStrFromByteArr(byte[] bArr){
        String result ="";
        for(byte b:bArr ){
            result += getBinaryStrFromByte(b);
        }
        return result;
    }
    /**
     * 把byte转化成2进制字符串
     * @param b
     * @return
     */
    public String getBinaryStrFromByte(byte b){
        String result ="";
        byte a = b; ;
        for (int i = 0; i < 8; i++){
            byte c=a;
            a=(byte)(a>>1);//每移一位如同将10进制数除以2并去掉余数。
            a=(byte)(a<<1);
            if(a==c){
                result="0"+result;
            }else{
                result="1"+result;
            }
            a=(byte)(a>>1);
        }
        return result;
    }

    /**
     * 把byte转化成2进制字符串
     * @param b
     * @return
     */
    public String getBinaryStrFromByte2(byte b){
        String result ="";
        byte a = b; ;
        for (int i = 0; i < 8; i++){
            result = (a % 2) + result;
            a=(byte)(a>>1);
        }
        return result;
    }

    /**
     * 把byte转化成2进制字符串
     * @param b
     * @return
     */
    public String getBinaryStrFromByte3(byte b){
        String result ="";
        byte a = b; ;
        for (int i = 0; i < 8; i++){
            result = (a % 2) + result;
            a = (byte) (a/2);
        }
        return result;
    }
}