- Java.io package classes
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- Java.io - FileInputStream
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- Java.io - InputStream
- Java.io - InputStreamReader
- Java.io - LineNumberInputStream
- Java.io - LineNumberReader
- Java.io - ObjectInputStream
- Java.io - ObjectInputStream.GetField
- Java.io - ObjectOutputStream
- io - ObjectOutputStream.PutField
- Java.io - ObjectStreamClass
- Java.io - ObjectStreamField
- Java.io - OutputStream
- Java.io - OutputStreamWriter
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- Java.io - PipedOutputStream
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- Java.io - RandomAccessFile
- Java.io - Reader
- Java.io - SequenceInputStream
- Java.io - SerializablePermission
- Java.io - StreamTokenizer
- Java.io - StringBufferInputStream
- Java.io - StringReader
- Java.io - StringWriter
- Java.io - Writer
- Java.io package extras
- Java.io - Interfaces
- Java.io - Exceptions
- Java.io package Useful Resources
- Java.io - Discussion
Java.io.LineNumberInputStream.available() Method
Description
The java.io.LineNumberInputStream.available() method returns the number of bytes that can be read from this input stream without blocking.
Declaration
Following is the declaration for java.io.LineNumberInputStream.available() method −
public int available()
Parameters
NA
Return Value
The method returns the number of bytes that can be read from this input stream without blocking.
Exception
IOException − If an I/O error occurs.
Example
The following example shows the usage of java.io.LineNumberInputStream.available() method.
package com.tutorialspoint; import java.io.FileInputStream; import java.io.IOException; import java.io.LineNumberInputStream; public class LineNumberInputStreamDemo { public static void main(String[] args) throws IOException { LineNumberInputStream lnis = null; FileInputStream fis = null; int i,j; char c; try { // create new input streams fis = new FileInputStream("C:/test.txt"); lnis = new LineNumberInputStream(fis); while((i = lnis.read())!=-1) { // converts int to char c = (char)i; // prints char System.out.println("Character read: "+c); j = lnis.available(); System.out.println("Available bytes: "+j); } } catch(Exception e) { // if any error occurs e.printStackTrace(); } finally { // closes the stream and releases any system resources if(fis!=null) fis.close(); if(lnis!=null) lnis.close(); } } }
Assuming we have a text file c:/test.txt, which has the following content. This file will be used as an input for our example program −
ABCDE
Let us compile and run the above program, this will produce the following result −
Character read: A Available bytes: 2 Character read: B Available bytes: 1 Character read: C Available bytes: 1 Character read: D Available bytes: 0 Character read: E Available bytes: 0
java_io_linenumberinputstream.htm
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