EN
Java - get file size
3 points
In this article, we would like to show you how to get file size in Java.
Below we present 3 methods of getting the file size:
File.length()Files.size()FileChannel.size()
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import java.io.File;2
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public class Example {4
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public static void main(String[] args) {6
File file = new File("C:\\projects\\file.txt");7
long fileSize = file.length();8
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System.out.println("File size in bytes: " + fileSize + " B");10
System.out.println("File size in kilobytes: " + fileSize / 1024 + " KB");11
System.out.println("File size in megabytes: " + fileSize / (1024 * 1024) + " MB");12
}13
}Output:
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File size in bytes: 113804 B2
File size in kilobytes: 111 KB3
File size in megabytes: 0 MB
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import java.io.IOException;2
import java.nio.file.Files;3
import java.nio.file.Path;4
import java.nio.file.Paths;5
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public class Example {7
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public static void main(String[] args) throws IOException {9
Path filePath = Paths.get("C:\\projects\\file.txt");10
long fileSize = Files.size(filePath);11
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System.out.println("File size in bytes: " + fileSize + " B");13
System.out.println("File size in kilobytes: " + fileSize / 1024 + " KB");14
System.out.println("File size in megabytes: " + fileSize / (1024 * 1024) + " MB");15
}16
}Output:
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File size in bytes: 113804 B2
File size in kilobytes: 111 KB3
File size in megabytes: 0 MBxxxxxxxxxx1
import java.io.IOException;2
import java.nio.channels.FileChannel;3
import java.nio.file.Path;4
import java.nio.file.Paths;5
6
public class Example {7
8
public static void main(String[] args) throws IOException {9
Path filePath = Paths.get("C:\\projects\\file.txt");10
FileChannel fileChannel = FileChannel.open(filePath);11
long fileSize = fileChannel.size();12
13
System.out.println("File size in bytes: " + fileSize + " B");14
System.out.println("File size in kilobytes: " + fileSize / 1024 + " KB");15
System.out.println("File size in megabytes: " + fileSize / (1024 * 1024) + " MB");16
}17
}Output:
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File size in bytes: 113804 B2
File size in kilobytes: 111 KB3
File size in megabytes: 0 MB