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InputStream or Reader. Method with same logic


InputStream or Reader. Method with same logic

By : Hunter
Date : November 22 2020, 09:00 AM
To fix the issue you can do You can create two methods using overloading to mean that each takes one of the inputs you want to support.
Define an interface with the functionality you need to access from the two methods and then write wrapper classes implementing that interface (these can be anonymous inner classes in the corresponding methods).
code :


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Open InputStream as Reader

Open InputStream as Reader


By : user2110972
Date : March 29 2020, 07:55 AM
it helps some times No, there isn't anything quite like that in Guava. CharStreams is the general class for working with Readers and Writers and it has a method
code :
InputSupplier<InputStreamReader> newReaderSupplier(
    InputSupplier<? extends InputStream> in, Charset charset)
InputStream reader

InputStream reader


By : Taha
Date : March 29 2020, 07:55 AM
will help you I'm currently trying to read in a image file from the server but either getting a incomplete data or , Let's examine the code:
code :
int size = connection.getContentLength() + 1024;
byte[] bytes = new byte[size];
InputStream input = new ByteArrayInputStream(bytes);
FileOutputStream out = new FileOutputStream(file);
input = connection.getInputStream();
int data = input.read(bytes);
while (data != -1) {
    out.write(bytes);
    data = input.read(bytes);
}
out.write(bytes, 0, data);
out.close();
input.close();
InputStream vs Reader

InputStream vs Reader


By : user3789626
Date : March 29 2020, 07:55 AM
To fix the issue you can do You can use a Reader to read text data. And it's supports some character encoding like - ISO, UTF-8. If you want to read a text file with some encoding then you can use Readers like - BufferedReader, StringReader etc.
And you can use Stream (InputStream, OutputStream) to manipulate binary data. For example you want to read a image file then you can use FileInputStream and when you want to save it to disk then you can use FileOutputStream.
What is java.io.Reader transferTo(java.io.Writer) method in Java 10 ? Is there a similar method for InputStream?

What is java.io.Reader transferTo(java.io.Writer) method in Java 10 ? Is there a similar method for InputStream?


By : JElison
Date : March 29 2020, 07:55 AM
should help you out There is such method in InputStream since Java 9: InputStream.transferTo()
Also, for earlier versions of JDK, there is IOUtils.copy(InputStream input, OutputStream output) in apache-commons-io library.
How do I avoid closing an InputStream passed to my method that I wrap in Reader streams?

How do I avoid closing an InputStream passed to my method that I wrap in Reader streams?


By : user3896970
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further You do not need to close a BufferedReader or InputStreamReader or probably most reader implementations, when you do not wish to close the underlying reader.
These readers do not hold any resources that a call to close() would make free and which the garbage collector would not make free anyway (e.g. native resources or values in static variables) when you drop the reference to the reader at the end of your method.
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