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Learn what InputStream and OutputStream are, why and when to use them, and how to write and read data from different sources. See code examples, explanations, and answers from Java experts.
Code sample
int i;while ((i = instr.read()) != -1) {osstr.write(i);}instr.close();...- Subclasses of InputStream
- Create An InputStream
- Methods of InputStream
- Example: InputStream Using FileInputStream
- GeneratedCaptionsTabForHeroSec
In order to use the functionality of InputStream, we can use its subclasses. Some of them are: 1. FileInputStream 2. ByteArrayInputStream 3. ObjectInputStream We will learn about all these subclasses in the next tutorial.
In order to create an InputStream, we must import the java.io.InputStreampackage first. Once we import the package, here is how we can create the input stream. Here, we have created an input stream using FileInputStream. It is because InputStream is an abstract class. Hence we cannot create an object of InputStream.
The InputStreamclass provides different methods that are implemented by its subclasses. Here are some of the commonly used methods: 1. read()- reads one byte of data from the input stream 2. read(byte array) - reads bytes from the stream and stores in the specified array 3. available()- returns the number of bytes available in the input stream 4. m...
Here is how we can implement InputStream using the FileInputStreamclass. Suppose we have a file named input.txtwith the following content. Let's try to read this file using FileInputStream (a subclass of InputStream). Output In the above example, we have created an input stream using the FileInputStream class. The input stream is linked with the fi...
Learn how to use the InputStream class and its subclasses to read data from a file or an array. See examples of read, available, mark, reset, skip and close methods.
throws IOException. 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.
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What is input stream in Java?
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Mar 28, 2024 · Learn about the Java InputStream class, which represents an input stream of bytes. See the constructor, methods, syntax, parameters, and exceptions of this class.
Oct 7, 2020 · Learn how to use the Java InputStream class to read bytes from files, networks, pipes and other sources. See methods, subclasses, performance tips and examples of InputStream usage.
Learn how to use InputStreamReader to convert byte data into character data in Java. See examples of creating, reading, and closing InputStreamReader with different character encodings.
Jan 5, 2024 · Overview. In this quick tutorial, we’ll illustrate how to write an InputStream to a File. First we’ll use plain Java, then Guava, and finally the Apache Commons IO library. This article is part of the “ Java – Back to Basic ” tutorial here on Baeldung. Further reading: Java - InputStream to Reader.
