Java – Decompress a Gzip file
In previous article, we show how to compress a file in Gzip format. This article shows how to decompress a Gzip file. We copy the GZIPInputStream into a FileOutputStream to…
Convert object to byte[] in Java
This article shows how to convert an object to byte or byte array and vice versa in Java. The example show how to use ByteArrayOutputStream and ObjectOutputStream to convert an…
Java – How to save byte[] to a file
This article shows a few ways to save a byte into a file. For JDK 1.7 and above, the NIO Files.write is the simplest solution to save byte to a…
Java – How to convert File to byte[]
In Java, we can use Files.readAllBytes(path) to convert a File object into a byte. Before Java 7, we can initiate a new byte with a predefined size (same with the…
How to convert String to InputStream in Java
In Java, we can use ByteArrayInputStream to convert a String to an InputStream. We will examine how to use ByteArrayInputStream to convert a String to an InputStream and saves it…
How to convert InputStream to String in Java
This article shows a few ways to convert an java.io.InputStream to a String. We will examine a few ways: using ByteArrayOutputStream, using InputStream#readAllBytes (Java 9), using InputStreamReader + StringBuilder, InputStreamReader…
How to convert String to byte[] in Java?
In Java, we can use str.getBytes(StandardCharsets.UTF_8) to convert a String into a byte. And we can use new String(bytes, StandardCharsets.UTF_8) to convert byte to a String.
How to convert byte[] array to String in Java
In Java, we can use new String(bytes, StandardCharsets.UTF_8) to convert a byte to a String. For text or character data, we use new String(bytes, StandardCharsets.UTF_8) to convert the byte to…
Java – How to convert byte arrays to Hex
This article shows you a few ways to convert byte arrays or byte to a hexadecimal (base 16 or hex) string representative. String.format, Integer.toHexString, Apache Commons Codec – commons-codec, Spring…