As commented, it’s not clear what you mean by merge. Taking available input “randomly” from either is complicated by InputStream.available not necessarily giving you a useful answer and blocking behaviour of streams. You would need two threads to be reading from the streams and then passing back data through, say, java.io.Piped(In|Out)putStream (although those classes have … Read more
I have a big Answer!! The Problem comes from the Android System or/and the FAT32 system. I can not explain how the system gets the error, it has something to do with deleting files and the FAT32 System. But the solution is really easy: Before you delete a Directory or File: rename it! Code to … Read more
it works this way static InputStream getInputStream(File zip, String entry) throws IOException { ZipInputStream zin = new ZipInputStream(new FileInputStream(zip)); for (ZipEntry e; (e = zin.getNextEntry()) != null;) { if (e.getName().equals(entry)) { return zin; } } throw new EOFException(“Cannot find ” + entry); } public static void main(String[] args) throws Exception { InputStream in = getInputStream(new … Read more
For me the best in this case is Apache commons-io to handle this and similar tasks. The IOUtils type has a static method to read an InputStream and return a byte[]. InputStream is; byte[] bytes = IOUtils.toByteArray(is); Internally this creates a ByteArrayOutputStream and copies the bytes to the output, then calls toByteArray(). UPDATE: as long … Read more
you can decorate InputStream being passed to POIFSFileSystem with a version that when close() is called it respond with reset(): class ResetOnCloseInputStream extends InputStream { private final InputStream decorated; public ResetOnCloseInputStream(InputStream anInputStream) { if (!anInputStream.markSupported()) { throw new IllegalArgumentException(“marking not supported”); } anInputStream.mark( 1 << 24); // magic constant: BEWARE decorated = anInputStream; } @Override … Read more
You can use ObjectOutputStream You write the object (obj in the code below) to the ObjectOutputStream, your object you want to convert to an input stream must implement Serializable. ByteArrayOutputStream baos = new ByteArrayOutputStream(); ObjectOutputStream oos = new ObjectOutputStream(baos); oos.writeObject(obj); oos.flush(); oos.close(); InputStream is = new ByteArrayInputStream(baos.toByteArray());
Yes, you need to close the inputstream if you want your system resources released back. FileInputStream.close() is what you need.
Most people use powers of 2 for the size. If the buffer is at least 512 bytes, it doesn’t make much difference ( < 20% ) For network the optimal size can be 2 KB to 8 KB (The underlying packet size is typically up to ~1.5 KB) For disk access, the fastest size can … Read more
Console.Read() reads only the next character from standard input, and Console.ReadLine() reads the next line of characters from the standard input stream. Standard input in case of Console Application is input from the user typed words in console UI of your application. Try to create it by Visual studio, and see by yourself.