The getBlockSize() method of a FileStore class is used to return the number of bytes per block in this file store Object. Every File storage is organized into discrete sequences of bytes called blocks and a block is the smallest storage unit of a file store. Every read and write operation is performed on multiple blocks. This method is helpful in getting the size of Block.
Syntax:
public long getBlockSize() throws IOException
Parameters: This method accepts nothing.
Return value: This method returns a positive value representing the block size of this file store, in bytes.
Exception: This method throws following Exceptions:
- IOException: if an I/O error occurs.
- UnsupportedOperationException: if the operation is not supported.
Below programs illustrate the getBlockSize() method:
Program 1:
// Java program to demonstrate// FileStore.getBlockSize() method import java.io.IOException;import java.nio.file.FileStore;import java.nio.file.Files;import java.nio.file.Path;import java.nio.file.Paths; public class GFG { public static void main(String[] args) throws IOException { // create object of Path Path path = Paths.get( "C:\\Movies\\001.txt"); // get FileStore object FileStore fs = Files.getFileStore(path); // print FileStore name and // getBlockSize System.out.println("FileStore Name: " + fs.name()); System.out.println("Block Size:" + fs.getBlockSize()); }} |
Output:
Program 2:
// Java program to demonstrate// FileStore.getBlockSize() method import java.io.IOException;import java.nio.file.FileStore;import java.nio.file.Files;import java.nio.file.Path;import java.nio.file.Paths; public class GFG { public static void main(String[] args) throws IOException { // create object of Path Path path = Paths.get( "E:\\Tutorials\\file.txt"); // get FileStore object FileStore fs = Files.getFileStore(path); // print FileStore name and // getBlockSize System.out.println("FileStore Name: " + fs.name()); System.out.println("Block Size:" + fs.getBlockSize()); }} |
Output:
References: https://docs.oracle.com/javase/10/docs/api/java/nio/file/FileStore.html#getBlockSize()
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