Java Utililty Methods InputStream Copy

List of utility methods to do InputStream Copy

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Description

The list of methods to do InputStream Copy are organized into topic(s).

Method

longcopyLarge(InputStream input, OutputStream output, byte[] buffer)
copy Large 
long count = 0;
int n = 0;
while (-1 != (n = input.read(buffer))) {
    output.write(buffer, 0, n);
    count += n;
return count;
longcopyLarge(InputStream input, OutputStream output, byte[] buffer)
Copy bytes from a large (over 2GB) InputStream to an OutputStream. 
long count = 0;
int n = 0;
while (EOF != (n = input.read(buffer))) {
    output.write(buffer, 0, n);
    count += n;
return count;
longcopyLarge(InputStream input, OutputStream output, byte[] buffer)
copy Large 
long count = 0;
int n;
while (EOF != (n = input.read(buffer))) {
    output.write(buffer, 0, n);
    count += n;
return count;
longcopyLarge(InputStream input, OutputStream output, final long inputOffset, final long length, byte[] buffer)
Copy some or all bytes from a large (over 2GB) InputStream to an OutputStream, optionally skipping input bytes. 
if (inputOffset > 0) {
    skipFully(input, inputOffset);
if (length == 0) {
    return 0;
final int bufferLength = buffer.length;
int bytesToRead = bufferLength;
...
longcopyLarge(InputStream input, OutputStream output, final long inputOffset, final long length, byte[] buffer)
Copy some or all bytes from a large (over 2GB) InputStream to an OutputStream, optionally skipping input bytes. 
if (inputOffset > 0) {
    skipFully(input, inputOffset);
if (length == 0) {
    return 0;
final int bufferLength = buffer.length;
int bytesToRead = bufferLength;
...
longcopyLarge(InputStream input, OutputStream output, long limit)
copy Large 
return copyLargeLimited(input, output, limit);
voidcopyStream(final BufferedReader in, final PrintWriter out, final String[] mapFrom, String[] mapTo)
copy Stream 
String line;
while ((line = in.readLine()) != null) {
    for (int i = 0; i < mapFrom.length; i++) {
        line = line.replaceAll(mapFrom[i], mapTo[i]);
    out.println(line);
InputStreamcopyStream(InputStream is)
copy Stream 
byte[] entity = new byte[4096];
int entitySize = 0;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
while ((entitySize = is.read(entity)) != -1)
    baos.write(entity, 0, entitySize);
InputStream cpis = new ByteArrayInputStream(baos.toByteArray());
baos.close();
return cpis;
...
byte[]copyStream(InputStream is)
copy Stream 
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
int nRead;
byte[] data = new byte[64 * 1024];
while ((nRead = is.read(data, 0, data.length)) != -1) {
    buffer.write(data, 0, nRead);
buffer.flush();
return buffer.toByteArray();
...
byte[]copyStream(InputStream iss)
Read a stream fully to an in-memory byte array. 
ByteArrayOutputStream baosExp = new ByteArrayOutputStream();
byte[] buffer = new byte[8192];
int read;
do {
    read = iss.read(buffer, 0, buffer.length);
    if (read > 0) {
        baosExp.write(buffer, 0, read);
} while (read >= 0);
baosExp.close();
return baosExp.toByteArray();