In this tutorial, we will learn about the Java InputStream class and its methods with the help of an example. The InputStream class of the java.io package is an abstract superclass that represents an input stream of bytes.

The read() method of an InputStream returns an int which contains the byte value of the byte read. Here is an InputStream read() example: ... To read all bytes in a Java InputStream you must keep reading until the value -1 is returned.

The first of the following two diagrams shows the class hierarchy for the input stream classes comprising the java.io package. InputStream inherits from the Object class; six classes inherit directly from InputStream. One of OutputStream's descendents, FilterInputStream, is itself an abstract ...

Java InputStream tutorial shows how to work with InputStream class in Java. We work with FileInputStream, ObjectOutputStream, and SequenceInputStream subclasses.

The following example shows the usage of Java InputStream close() method. package com.tutorialspoint; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; public class InputStreamDemo { public static void main(String[] args) { try (InputStream inputStream = new FileInputStream("example.txt")) { int data; while ((data = inputStream.read()) != -1) { // Read character by character System.out.print((char) data); } // No need to manually close, try-with-resources handles it } catch (IOException e) { e.printStackTrace(); } } }

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The read(b, off, len) method for class InputStream simply calls the method read() repeatedly. If the first such call results in an IOException, that exception is returned from the call to the read(b, off, len) method.

March 28, 2024 - The markSupported method of InputStream returns false by default. Syntax :public boolean markSupported() Parameters : ------- Return : true if input stream supports the mark() and reset() method else,false · Java.io.InputStream.skip(long arg) skips and discards arg bytes in the input stream.

The following example shows the usage of Java InputStream read() method. package com.tutorialspoint; import java.io.FileInputStream; import java.io.InputStream; public class InputStreamDemo { public static void main(String[] args) throws Exception { InputStream is = null; int i; char c; try { // new input stream created is = new FileInputStream("test.txt"); System.out.println("Characters printed:"); // reads till the end of the stream while((i = is.read())!=-1) { // converts integer to character c = (char)i; // prints character System.out.print(c); } } catch(Exception e) { // if any I/O error occurs e.printStackTrace(); } finally { // releases system resources associated with this stream if(is!=null) is.close(); } } }

3 days ago - The read(b, off, len) method for class InputStream simply calls the method read() repeatedly. If the first such call results in an IOException, that exception is returned from the call to the read(b, off, len) method.

long bytesSkipped = inputStream.skip(100); // Skip 100 bytes ... Enhance your stream handling skills with practical exercises on LabEx! graph LR A[Input Stream] --> B[Buffered Stream] B --> C[Data Stream] C --> D[Processing] import java.io.*; public class StreamChainingDemo { public static void main(String[] args) { try ( FileInputStream fis = new FileInputStream("/home/labex/data.bin"); BufferedInputStream bis = new BufferedInputStream(fis); DataInputStream dis = new DataInputStream(bis) ) { // Read different data types int intValue = dis.readInt(); double doubleValue = dis.readDouble(); String stringValue = dis.readUTF(); } catch (IOException e) { e.printStackTrace(); } } }

October 17, 2022 - Printing the InputStream. ... Java Program to Convert String to InputStream using ByteArrayInputStream.

January 20, 2026 - The read(b, off, len) method for class InputStream simply calls the method read() repeatedly. If the first such call results in an IOException, that exception is returned from the call to the read(b, off, len) method.

January 20, 2026 - The read(b, off, len) method for class InputStream simply calls the method read() repeatedly. If the first such call results in an IOException, that exception is returned from the call to the read(b, off, len) method.

January 5, 2024 - In this quick tutorial, we’re going to show how to convert a File to an InputStream — first using plain Java and then Guava and the Apache Commons IO library.

In Java, an InputStream is an abstract class representing an input stream of bytes, providing a common interface for reading data from various sources, such as files or network connections.

April 10, 2025 - In this article, you will learn how to load and read files as InputStreams in Java.

The read(b, off, len) method for class InputStream simply calls the method read() repeatedly. If the first such call results in an IOException, that exception is returned from the call to the read(b, off, len) method.

January 20, 2026 - The read(b, off, len) method for class InputStream simply calls the method read() repeatedly. If the first such call results in an IOException, that exception is returned from the call to the read(b, off, len) method.

Learn all Java InputStream classes with detailed explanation, examples, and usage. Understand FileInputStream, BufferedInputStream, DataInputStream, ObjectInputStream, and more.