哪位大神能帮把这段C语音的代码翻译成Java代码，跪谢！

int getMabBuf(char* fileName, char* mabBuf)
{
    char sBlock[256+1];
    FILE *pfFileI;
    struct stat fbuf;
    if(stat(fileName,&fbuf) < 0)
    {
        return -1;
    }
    if ((pfFileI = fopen(fileName, "r")) == NULL)
    {
        return -2;
    }
    while (!feof(pfFileI))
    {
        memset(sBlock, 0, sizeof(sBlock));
        fread(sBlock, __BLOCKSIZE, 1, pfFileI);
        Do_XOR(mabBuf, sBlock, __BLOCKSIZE);
    }
    fclose(pfFileI);
    return 0;
}

void doXOR( char* deststr , char* source , int strlength )
{
int i = 0;
for( i = 0 ; i < strlength ; i++ )
{
deststr[i] ^= source[i];
}
}


#define __BLOCKSIZE 256

只是单纯的翻译代码

public class Sample {
    public static final int __BLOCKSIZE = 256;
    public static int getMabBuf(String fileName, byte []mabBuf) {
        byte []sBlock = new byte[256+1];
        File pfFile = new File(fileName);
        if (! pfFile.exists()) {
            return -1;
        }
        try (FileInputStream fis = new FileInputStream(pfFile);) {
            while ((fis.read(sBlock, 0, __BLOCKSIZE)) != -1) {
                doXOR(mabBuf, sBlock, __BLOCKSIZE);
                Arrays.fill(sBlock, (byte)0);
            }
        } catch (Exception e) {
            return -2;
        }
        return 0;
    }
    public static void doXOR( byte []deststr , byte []source , int strlength ) {
        int i = 0;
        for( i = 0 ; i < strlength ; i++ ) {
            deststr[i] ^= source[i];
        }
    }
}