Let's try to read this file using FileInputStream (a subclass of InputStream). import java.io.FileInputStream; import java.io.InputStream; class Main { public static void main(String args[]) { byte[] array = new byte[100]; try { InputStream input = new FileInputStream("input.txt"); System.out.println("Available bytes in the file: " + input.available()); // Read byte from the input stream input.read(array); System.out.println("Data read from the file: "); // Convert byte array into string String data = new String(array); System.out.println(data); // Close the input stream input.close(); } catch (Exception e) { e.getStackTrace(); } } }

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 ...

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(); } } }

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

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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.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 byte by byte System.out.print((char) data); // Convert byte to char and print } } catch (IOException e) { e.printStackTrace(); } } }

5 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.

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.

July 23, 2025 - The read() method of InputStream class, reads a byte of data from the input stream. The next byte of data is returned, or -1 if the end of the file is reached and throws an exception if an I/O error occurs.