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

voidcopyStream(Reader in, Writer out)
copy Stream 
char[] buffer = new char[2048];
int nread;
int col = 0;
try {
    nread = in.read(buffer);
    while (nread > 0) {
        out.write(buffer, 0, nread);
        nread = in.read(buffer);
...
voidcopyStream(Reader in, Writer out)
Copies all data from one Reader to another Writer. 
char[] buff = new char[8192]; 
int len;
while ((len = in.read(buff)) > 0) {
    out.write(buff, 0, len);
voidcopyStream(Reader reader, Writer writer)
copy Stream 
int len;
char[] buffer = new char[1024];
while ((len = reader.read(buffer)) >= 0) {
    writer.write(buffer, 0, len);
byte[]copyStream(ZipInputStream in, ZipEntry entry)
copy Stream 
ByteArrayOutputStream out = new ByteArrayOutputStream();
int size;
byte[] buffer = new byte[2048];
BufferedOutputStream bos = new BufferedOutputStream(out);
while ((size = in.read(buffer, 0, buffer.length)) != -1) {
    bos.write(buffer, 0, size);
bos.flush();
...
byte[]copyStreamBytes(InputStream is)
copy Stream Bytes 
byte[] buffer = new byte[1024];
ByteArrayOutputStream bos = new ByteArrayOutputStream();
int len;
while ((len = is.read(buffer, 0, buffer.length)) >= 0) {
    bos.write(buffer, 0, len);
return bos.toByteArray();
intcopyStreamToByteArray(InputStream in, byte[] dest, int off, int len)
Reads up to len bytes from in and writes them to dest starting with off. 
int r = 0;
while (r < len) {
    int n = in.read(dest, off + r, len - r);
    if (n > 0) {
        r += n;
    } else if (n == -1) {
        break;
    } else {
...
byte[]copyStreamToBytes(InputStream inputStream)
copy Stream To Bytes 
requireNonNull(inputStream);
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
copyStream(inputStream, byteArrayOutputStream);
return byteArrayOutputStream.toByteArray();
StringcopyStreamToString(InputStream input)
Calls #copyStreamToString(InputStream,int,String) using the input's InputStream#available() available size and the platforms's default charset. 
return copyStreamToString(input, input.available(), null);
StringcopyStreamToString(InputStream input)
Copy the data from an InputStream to a string using the default charset without closing the stream. 
return copyStreamToString(input, input.available());
StringcopyStreamToString(InputStream input)
Copy the data from an InputStream to a string using the default charset without closing the stream. 
return copyStreamToString(input, input.available());