public static void dump()

in src/main/java/org/apache/commons/io/HexDump.java [108:155]
43 lines of code
10 McCabe index (conditional complexity)

    public static void dump(final byte[] data, final long offset,
                            final Appendable appendable, final int index,
                            final int length)
            throws IOException, ArrayIndexOutOfBoundsException {
        Objects.requireNonNull(appendable, "appendable");
        if (index < 0 || index >= data.length) {
            throw new ArrayIndexOutOfBoundsException(
                    "illegal index: " + index + " into array of length "
                    + data.length);
        }
        long display_offset = offset + index;
        final StringBuilder buffer = new StringBuilder(74);

        // TODO Use Objects.checkFromIndexSize(index, length, data.length) when upgrading to JDK9
        if (length < 0 || index + length > data.length) {
            throw new ArrayIndexOutOfBoundsException(String.format("Range [%s, %<s + %s) out of bounds for length %s", index, length, data.length));
        }

        final int endIndex = index + length;

        for (int j = index; j < endIndex; j += 16) {
            int chars_read = endIndex - j;

            if (chars_read > 16) {
                chars_read = 16;
            }
            dump(buffer, display_offset).append(' ');
            for (int k = 0; k < 16; k++) {
                if (k < chars_read) {
                    dump(buffer, data[k + j]);
                } else {
                    buffer.append("  ");
                }
                buffer.append(' ');
            }
            for (int k = 0; k < chars_read; k++) {
                if (data[k + j] >= ' ' && data[k + j] < 127) {
                    buffer.append((char) data[k + j]);
                } else {
                    buffer.append('.');
                }
            }
            buffer.append(System.lineSeparator());
            appendable.append(buffer);
            buffer.setLength(0);
            display_offset += chars_read;
        }
    }