Java: Find the size of a specified file

Last update on April 01 2025 10:53:58 (UTC/GMT +8 hours)

File Size Finder

Write a Java program to find the size of a specified file.

Pictorial Presentation:

Sample Solution:

Java Code:

 import java.util.Scanner;
import java.io.File;

public class Exercise45 {
    public static void main(String[] args) {
        // Display the file sizes in bytes for two files.
        System.out.println("/home/students/abc.txt  : " + new File("abc.txt").length() + " bytes");
        System.out.println("/home/students/test.txt : " + new File("test.txt").length() + " bytes");
    }
}

Sample Output:

/home/students/abc.txt  : 0 bytes                                      
/home/students/test.txt : 0 bytes 

Flowchart:

For more Practice: Solve these Related Problems:

• Modify the program to check if the file exists before checking size.
• Display file size in different units (KB, MB, GB).
• Write a program to find the largest file in a directory.
• Modify the program to calculate total disk usage.

Java Code Editor:

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