Java - Unable to create a file

Question

I am in a Linux Envirnomnet. I am also using Netbeans. Here is my code below:

import java.io.*;


public class myFirstJavaProgram {

    public static void main(String[] args) {
      File file = new File("home/gk/Hello1.txt");
      // creates the file
      file.createNewFile();
      // creates a FileWriter Object
    }
}

This is likely a permissions issue. Try creating the file in your home directory — MadProgrammer, Jun 25 '14 at 04:37
If you are using linux you should add ROOT as initial in your PATH. e.g. `/home/gk/Hello1.txt` And also check that you have WRITE permission on `gk` directory? e.g. `$> ls -l` — Ashwin Parmar, Jun 25 '14 at 04:40

NickGerleman · Answer 1 · 2014-06-25T04:54:32.830

2

You forgot a slash before home. It is looking for a folder that most likely does not exist inside the classpath.

EDIT After you pointed out the exception you were receiving I realized that a checked exception is not being handled. You need to catch the possible IOException or include the exception in the method signature.

edited Jun 25 '14 at 04:54

answered Jun 25 '14 at 04:37

NickGerleman

106
3

What exception are you getting? – NickGerleman Jun 25 '14 at 04:39
Description Resource Path Location Type Unhandled exception type IOException myFirstJavaProgram.java /myFirstJavaProgram/src line 22 Java Problem – Gavindra Kalikapersaud Jun 25 '14 at 04:40
1

Oh whoops, I see. Java has a system called checked Exceptions. You need to say that the method throws the exception or try to catch it. See http://stackoverflow.com/questions/6115896/java-checked-vs-unchecked-exception-explanation – NickGerleman Jun 25 '14 at 04:46

Ashwin Parmar · Answer 2 · 2014-06-25T06:12:13.107

1

import java.io.*;

/**
 *
 * @author Ashwin Parmar
 */
public class myFirstJavaProgram  {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        try {
            File file = new File("/home/gk/Hello1.txt");
            file.createNewFile();
        } catch(IOException e) {
            System.out.println(e.getMessage());
        }
        // creates a FileWriter Object
    }
}

When dealing with any File IO action in Java, it is always best to use a try/catch loop

edited Jun 25 '14 at 06:12

answered Jun 25 '14 at 04:49

Ashwin Parmar

3,025
3
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question. why is the try/catch needed? is there a way to run this progrram with try/catch? – Gavindra Kalikapersaud Jun 25 '14 at 05:19
when dealing with any FileIO action in Java, it is always best to use a try/catch loop. – user2277872 Jun 25 '14 at 05:34
If you are trying to run the program without `Try Catch` it will thrown `IOException` for that You must handle that exception by using Try/Catch. – Ashwin Parmar Jun 26 '14 at 04:31

score 0 · Answer 3 · answered Jun 25 '14 at 04:40

0

Error in your path. This home/gk/Hello1.txt should be /home/gk/Hello1.txt

answered Jun 25 '14 at 04:40

Rajen Raiyarela

5,526
4
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the path corresponds to gk user home directory. Do you have gk user? if you have then definitely it is permission issue. – Rajen Raiyarela Jun 25 '14 at 04:42

Java - Unable to create a file

3 Answers3