Please help me knowing the issue in my code.

Question about the task

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import java.io.*; public class Solution { public static void main(String[] args) throws IOException { //1.program should read file names from the console BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); String fileName = null; try { boolean exists = true; while (exists) { fileName = reader.readLine(); //2.create an input stream for each file FileInputStream readFile = new FileInputStream(fileName); File tempFile = new File(fileName); exists = tempFile.exists(); //3. if file does not exist,catch FileNotFoundException if (!exists) { throw new FileNotFoundException(); } readFile.close(); } } catch (FileNotFoundException e) { reader.close(); System.out.println(fileName); } } }

Read file names from the console.
If the file does not exist (i.e. an invalid file name is given), then catch the FileNotFoundException, display the invalid file name, and exit the program.
Close the streams.
Don't use System.exit();

Requirements:

The program should read file names from the console.
You need to create an input stream for each file.
If the file does not exist, the program must catch the FileNotFoundException.
After catching the exception, the program should display the file name and exit.
The file input streams must be closed.
Don't use "System.exit();".

package com.codegym.task.task18.task1824; import java.io.*; public class Solution { public static void main(String[] args) throws IOException { //1.program should read file names from the console BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); String fileName=null; try { boolean exists=true; while(exists) { fileName = reader.readLine(); //2.create an input stream for each file FileInputStream readFile = new FileInputStream(fileName); File tempFile = new File(fileName); exists = tempFile.exists(); //3. if file does not exist,catch FileNotFoundException if (!exists) { throw new FileNotFoundException(); } readFile.close(); } } catch (FileNotFoundException e) { reader.close(); System.out.println(fileName); } } }

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Nouser

Level 36 , Germany

3 May 2020, 14:40

solution

exists is not necessary as a not found file is catched and this ends the loop

BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String fileName = null;

try {
    while (true) {
        fileName = reader.readLine();
        FileInputStream fis = new FileInputStream(fileName);
        fis.close();
    }
} catch (FileNotFoundException e) {
    reader.close();
    System.out.println(fileName);
} catch (IOException e) {
    e.printStackTrace();
}

Manish Sinha

Level 26 , london, United Kingdom

3 May 2020, 15:37

Thanks Thomas_de . yep agree. I think , I am still satisfying the requirements with my code. I pasted your code , and it runs all good. Very weird, it did not fulfil the requirement with my code.

Nouser

Level 36 , Germany

3 May 2020, 16:07

I agree ;) sometimes the validation is an unknown enemy