package com.ferfykins.EncryptDecrypt;

import java.io.*;

public class Test {


public static void main(String[] args) {

File file = new File("C:\\Users\\ferfers329\\Desktop\\Projects\\Ferfs-EncryptDecrypt\\TextInfo.txt");
try {
Encrypt(file);
} catch (IOException e) {
e.printStackTrace();
}


}


private static void Encrypt(File file) throws IOException {
BufferedReader br = new BufferedReader(new FileReader(file));
FileWriter fr = new FileWriter(file);
String line = "";
int key = 5;
try {
while ((line = br.readLine()) != null) {
System.out.println(line);
// char[] chars = line.toCharArray();
// for (char c : chars) {
// c += key;
// fr.write(c);
// }

}


} catch (FileNotFoundException e) {
System.out.println("File not found.");
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
br.close();
fr.close();
}


}



}









specifically:

while ((line = br.readLine()) != null) {
System.out.println(line);


part, it's not printing contents to console for some reason..... also deletes information from text file

Have you tried to set some break points in your IDE? I am guessing your string variable "line" is null and that is why it is not getting printed out. Also it is deleting everything in your file because you are reading and writing to the same place.

Download intellij and step through your code.

ehh it's not string variable, tested with an altered code and it works fine...... (using different spot for filereader, but in the modified code i never close it or filewriter cuz it's out of scope)



but yes that's what i'm trying ot do, read the file and overwrite it line for line with new values.

i would not recommend doing it that way. read the entire file first in memory, then write your file all at once. i assume you're not dealing with huge files

Hmm alright thanks for tip!

Im assuming this issue is solved, if not DM me and i'll take a look.

line is an empty string and br.readLine() = null. So, they never equal.