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()