I read this post but I am not following. I have seen this but have not seen a proper example of converting a ByteArrayInputStream
to String
using a ByteArrayOutputStream
.
To retrieve the contents of a ByteArrayInputStream
as a String
, is using a ByteArrayOutputstream
recommended or is there a more preferable way?
I was considering this example and extend ByteArrayInputStream
and utilize a Decorator to increase functionality at run time. Any interest in this being a better solution to employing a ByteArrayOutputStream
?
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.
Answer to comment: using ByteArrayOutputStream
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buf = new byte[8192];
for (;;) {
int nread = in.read(buf, 0, buf.length);
if (nread <= 0) {
break;
}
baos.write(buf, 0, nread);
}
in.close();
baos.close();
byte[] bytes = baos.toByteArray();
Here in may be any InputStream.
Since java 10 there also is a ByteArrayOutputStream#toString(Charset)
.
String s = baos.toString(StandardCharsets.UTF_8);