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Hi all, my code fulfills the conditions and I've done multiple checks. Can't see where the mistake is, please help if you can. Thank you

The main() method accepts three arguments:
1) fileName - the path to a file;
2) number - a position in the file;
3) text - the text.
Write text to the fileName file starting at the position indicated by number.
The write operation must overwrite the old data in the file.
If the file is too short, then begin writing at the end of the file.
Use RandomAccessFile and its seek() and write() methods.

Requirements:

You must use RandomAccessFile in the Solution class's main() method.
In the Solution class's main() method, the program must write data to the file using the RandomAccessFile class's write() method.
The write operation must start at the specified position and replace the contents.
If the file is too short, then you must write text at the end of the file.

package com.codegym.task.task32.task3201; import java.io.File; import java.io.FileNotFoundException; import java.io.IOException; import java.io.RandomAccessFile; /* Writing to an existing file */ public class Solution { public static void main(String... args) throws IOException { String fileName = "C:/Users/teocl/OneDrive/Desktop/a.txt"; long number = 2; long size = new File(fileName).length(); // System.out.println(size); byte[] text = {55, 56, 55, 56, 55}; RandomAccessFile raf = new RandomAccessFile(fileName, "rw"); if (size < number) { raf.seek(size); raf.write(text); } else { raf.seek(number); raf.write(text); } raf.close(); } }

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Nithin

Level 35 , Hyderabad, India

17 July 2019, 15:42

solution

#1 : you should take file name , number and text to write in the file must be taken from main arguments i.e, args[0] , args[1] and args[2] #2 : you can calculate size of file directly using raf.length(). there is no need to create a file argument