java.io.BufferedInputStream available()
Description
This method returns the sum of the number of bytes remaining to be read in the buffer (count – pos) and the result of calling the in.available().
Override by:
- available in class FilterInputStream
Throws:
- IOException – if this input stream has been closed by invoking its close() method, or an I/O error occurs.
Method Syntax
public int available()
throws IOException
Method Argument
Data Type | Parameter | Description |
---|---|---|
N/A | N/A | N/A |
Method Returns
This method returns void.
Compatibility
Requires Java 1.0 and up
Java BufferedInputStream available() Example
Below is a java code demonstrates the use of available() method of BufferedInputStream class. The example presented might be simple however it shows the behaviour of the available().
package com.javatutorialhq.java.examples; import java.io.BufferedInputStream; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; /* * This example source code demonstrates the use of * available() method of BufferedInputStream class */ public class BufferedInputStreamAvailableExample { public static void main(String[] args) { try { // initialize an input stream which in this case // we are intended to read a file thus // FileInputStream object suits it best FileInputStream fis = new FileInputStream("C:javatutorialhq" + "inputtest_file.txt"); // initialize BufferedInputStream object BufferedInputStream buffIs = new BufferedInputStream(fis); // initialize variables int val; //character place holder while((val=buffIs.read())!=-1){ // convert the value to character char result = (char)val; System.out.println("Character read:"+result); // check how many available bytes on the stream int available = buffIs.available(); System.out.println("How many available?:"+available); } buffIs.close(); fis.close(); } catch (FileNotFoundException e) { System.out.println("File does not exists"); } catch (IOException e) { System.out.println("IOException occured"); } } }
Sample Output
Below is the sample output when you run the above example.
Character read:A How many available?:9 Character read:B How many available?:8 Character read:C How many available?:7 Character read:D How many available?:6 Character read:E How many available?:5 Character read:a How many available?:4 Character read:b How many available?:3 Character read:c How many available?:2 Character read:d How many available?:1 Character read:e How many available?:0