在文件中写入特定字节数

Question

I have the array listed below:

I want to write these bytes in a file until the file reaches a size of 1029 bytes . Any ideas?

I tried this code but it does not seem to work :

public static byte[] aSnouty = {97, 98, 99, 100, 101, 102, 103, 104, 105, 49, 45, 50, 51, 52, 53};

File file = new File(filename);
FileOutputStream fos = null;
try {
    fos = new FileOutputStream(file);
    do {
        fos.write(aSnouty); 
    } while(file.length()!=1029);

} catch(Exception ex) {
    ex.printStackTrace();
}

Answer 1

Here's a solution starting from the code you provided:

    byte[] aSnouty = {97, 98, 99, 100, 101, 102, 103, 104, 105, 49, 45, 50, 51, 52, 53};

    File file = new File("C:/users/BXM0121/testTenTwentyNine.txt");
    FileOutputStream fos = new FileOutputStream(file);
    int fileSizeInBytes = (int) file.length();
    final int maxFileSize = 1029;
    try {
        do {

            if ((maxFileSize - fileSizeInBytes) < aSnouty.length)
            {
                fos.write(Arrays.copyOfRange(aSnouty, 0, maxFileSize-fileSizeInBytes));
                break;
            }
            fos.write(aSnouty); 
            fileSizeInBytes += aSnouty.length;
        } while (file.length() != maxFileSize);

    } catch(Exception ex) {
        ex.printStackTrace();
    } finally{
        fos.close();
    }

Edit: I see your comment about normal distribution and that's a whole different beast. I didn't code for that.