bytearrayinputstream – Tarik Billa

How to create ByteArrayInputStream from a file in Java?

December 8, 2023 by Tarik

Use the FileUtils#readFileToByteArray(File) from Apache Commons IO, and then create the ByteArrayInputStream using the ByteArrayInputStream(byte[]) constructor. public static ByteArrayInputStream retrieveByteArrayInputStream(File file) { return new ByteArrayInputStream(FileUtils.readFileToByteArray(file)); }

Convert Contents Of A ByteArrayInputStream To String

August 20, 2023 by Tarik

A ByteArrayOutputStream can read from any InputStream and at the end yield a byte[]. However with a ByteArrayInputStream it is simpler: int n = in.available(); byte[] bytes = new byte[n]; in.read(bytes, 0, n); String s = new String(bytes, StandardCharsets.UTF_8); // Or any encoding. For a ByteArrayInputStream available() yields the total number of bytes. Addendum 2021-11-16 … Read more