Superclass of all classes representing an input stream of characters is

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This abstract class is the superclass of all classes representing an input stream of bytes. Applications that need to define a subclass of InputStream must always provide a method that returns the next byte of input. Since: 1.0 See Also: • BufferedInputStream • ByteArrayInputStream • DataInputStream • FilterInputStream • read() • OutputStream • PushbackInputStream • Constructor Summary Returns a new InputStream that reads no bytes. The returned stream is initially open. The stream is closed by calling the close() method. Subsequent calls to close() have no effect. While the stream is open, the available(), read(), read(byte[]), read(byte[], int, int), readAllBytes(), readNBytes(byte[], int, int), readNBytes(int), skip(long), skipNBytes(long), and transferTo() methods all behave as if end of stream has been reached. After the stream has been closed, these methods all throw IOException. The markSupported() method returns false. The mark() method does nothing, and the reset() method throws IOException. Returns: an InputStream which contains no bytes Since: 11 • read Reads the next byte of data from the input stream. The value byte is returned as an int in the range 0 to 255. If no byte is available because the end of the stream has been reached, the value -1 is returned. This method blocks until input data is available, the end of the stream is detected, or an exception is thrown. Returns: the next byte of data, or -1 if the end of the stream is reached. Throws: • read Reads ...

If the question is : "what the difference between those classes", here is a summary, but read the javadoc for more info : An inputStream is the base class to read bytes from a stream (network or file). It provides the ability to read bytes from the stream and detect the end of the stream. DataInputStream is a kind of InputStream to read data directly as primitive data types. BufferedInputStream is a kind of inputStream that reads data from a stream and uses a buffer to optimize speed access to data. data is basicaly read ahead of time and this reduces disk or network access. I think you are asking difference so i am giving some details Input Stream means:this abstract class is the superclass of all classes representing an input stream of bytes.Applications that need to define a subclass of InputStream must always provide a method that returns the next byte of input. DataInputStream:A data input stream lets an application read primitive Java data types from an underlying input stream in a machine-independent way. An application uses a data output stream to write data that can later be read by a data input stream. For More use this link BufferedInputStream:A BufferedInputStream adds functionality to another input stream-namely, the ability to buffer the input and to support the mark and reset methods. When the BufferedInputStream is created, an internal buffer array is created. As bytes from the stream are read or skipped, the internal buffer is refilled as necessary from th...

Provides for system input and output through data streams, serialization and the file system. Unless otherwise noted, passing a null argument to a constructor or method in any class or interface in this package will cause a NullPointerException to be thrown. Package Specification • Related Documentation For overviews, tutorials, examples, guides, and tool documentation, please see: • Since: JDK1.0

The term is quite vague and doesn't really seem to be defined anywhere, so good question. As best I understand it it means things like FileInputStream, FileOutputStream, ByteArrayOutputStream, etc. Classes that have wrapped up a particular kind of stream for you and provide the functionality required to work with it. Note that most of these streams are working with characters not bytes, and that is generally what you want in Java for dealing with String data in files. On the other hand though if you are reading a pure binary source then the data will come in as bytes and you can then use InputStreamReader to convert those bytes to characters. So a prepackaged stream reader is one that already provides you the data pre-packaged in the form that you want it. I believe it to mean classes which inherit Reader or Writer. Such classes "wrap" byte streams so as to convert them automatically to character streams. Example: FileReader, FileWriter; they can read text from files directly. If no such classes exist for your particular stream needs but you know what you get out of it/put into it is text, then you must use these two wrapper classes. Classical example: HTML. It is text, but what you get from sockets is byte streams; if you want to read it as HTML, use a Reader (with the correct encoding!) over the socket stream (but of course, many APIs today don't require you to do that).

This post will discuss how to read the contents of a file using an InputStream in Java. InputStream abstract class is the super class of all classes representing an input stream of bytes. There are several ways to read the contents of a file using InputStream in Java: 1. Using Apache Commons IO An elegant and concise solution is to use the IOUtils class from Apache Commons IO library whose InputStream and renders its contents as a string using specified encoding, as shown below: } 2. BufferedReader’s readLine() method Another solution is to use the BufferedReader. The following code read streams of raw bytes using InputStream and decodes them into characters using a specified charset using an readLine() method would read bytes from the file and convert them into characters.

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Provides for system input and output through data streams, serialization and the file system. Unless otherwise noted, passing a null argument to a constructor or method in any class or interface in this package will cause a NullPointerException to be thrown. Object Serialization Warning: Deserialization of untrusted data is inherently dangerous and should be avoided. Untrusted data should be carefully validated according to the "Serialization and Deserialization" section of the • • • Since: 1.0 • Interface Summary Interface Description JavaScript is disabled on your browser. For further API reference and developer documentation see the Java is a trademark or registered trademark of Oracle and/or its affiliates in the US and other countries. All rights reserved. Use is subject to Scripting on this page tracks web page traffic, but does not change the content in any way.

package com.vogella.eclipse.ide.first ; import java.io.IOException ; import java.nio.file.Files ; import java.nio.file.Paths ; import java.util.Optional ; import java.util.stream.Stream ; public class ReadMANIFESTFile package com.vogella.java.files ; import java.io.IOException ; import java.nio.file.Files ; import java.nio.file.Paths ; import java.nio.file.StandardOpenOption ; import java.util.List ; public class FilesUtil package com.vogella.java.files ; import java.io.IOException ; import java.nio.file.Path ; import java.nio.file.Paths ; public class Main