asked on

java IO example

Hi,

I was trying below java IO example

http://www.mkyong.com/java/how-to-create-a-file-in-java/

I am getting error as below

java.io.IOException: A required privilege is not held by the client
      at java.io.WinNTFileSystem.createFileExclusively(Native Method)
      at java.io.File.createNewFile(Unknown Source)
      at coreservlets.CreateFileExample.main(CreateFileExample.java:14)

Please advise on how to resolve it.

I tried one other location where i can copy paste files etc where i have all privileges to do it

C:\Users\Desktop\gpfolder\gpmy\personal\newfile.txt

but the above path is not liked by compiler

Please advise.

Any links resources ideas highly appreciated. Thanks in advance

CEHJ

Quite simply you can't (usually in later versions of Windows) write to the root of C:\ for security reasons. You don't normally need to anyway. If you really do, then you could probably run your Java in an admin prompt

gudii9

ASKER

>>>C:\Users\Desktop\gpfolder\gpmy\personal\newfile.txt

I wonder why this path also not working. For testing which location i can use. please advise

CEHJ

I'd need to see your code

gudii9

ASKER

Please find my code

package com.mkyong.file;
 
import java.io.File;
import java.io.IOException;
 
public class CreateFileExample 
{
    public static void main( String[] args )
    {	
    	try {
 
	      File file = new File("C:\Users\Desktop\gpfolder\gpmy\personal\newfile.txt");
 
	      if (file.createNewFile()){
	        System.out.println("File is created!");
	      }else{
	        System.out.println("File already exists.");
	      }
 
    	} catch (IOException e) {
	      e.printStackTrace();
	}
    }
}

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CEHJ

All the parent directories need to exist too. If they don't, then see
http://docs.oracle.com/javase/7/docs/api/java/io/File.html#mkdirs()

gudii9

ASKER

How do i modify my code to fix the issue. Please advise

CEHJ

File root = new File("C:/Users/Desktop/gpfolder/gpmy/personal");
if (!root.exists()) {
    root.mkdirs();
}
File f = new File(root, "newfile.txt");
boolean created = f.createNewFile();
System.out.printf("Was file %s created? %b%n", f.getAbsolutePath(), created);

Open in new window

should do it, but i've got to ask - why do you want to create an empty text file?

gudii9

ASKER

>>>File root = new File("C:/Users/Desktop/gpfolder/gpmy/personal");

I am getting
''Invalid escape sequence" as in attachment.

Please advise on how to fix it
.

My final program looks like below

package com.mkyong.file;
 
import java.io.File;
import java.io.IOException;
 
public class CreateFileExample 
{
    public static void main( String[] args )
    {	
 
    	
    	File root =  new File("C:\Users\Desktop\gpfolder\gpmy\personal\newfile.txt");
    	if (!root.exists()) {
    	    root.mkdirs();
    	}
    	File f = new File(root, "newfile.txt");
    	boolean created = f.createNewFile();
    	System.out.printf("Was file %s created? %b%n", f.getAbsolutePath(), created);
    }
}

Open in new window

EscapeSeq.jpg

ASKER CERTIFIED SOLUTION

CEHJ

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CEHJ