Permission Denied Okhttp File Upload Java Io Filenotfound Excpetion

coffee.io.FileNotFoundException (Admission is denied) – Causes and Set up tutorial shows what are the possible causes and fix for java.io.FileNotFoundException (Access is denied) exception.

How to fix coffee.io.FileNotFoundException (Access is denied) exception?

In that location are several possible causes due to which you may see java.io.FileNotFoundException (Access is denied) exception as given beneath.

1) Trying to open up and read a directory

Yous cannot open and read a directory like normal files. Trying to do that will result in the exception. Please come across the beneath-given code example where I try to open a directory and attempt to read it.

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package com . javacodeexamples . exceptionexamples ; import java . io . File ; import java . io . FileInputStream ; import coffee . io . FileNotFoundException ; import java . io . IOException ; public form AccessDeniedExample { public static void master ( String [ ] args ) { FileInputStream fis = null ; try { File file = new File ( "C:/dir_1" ) ; /*              * Opening and reading a directory!              */ fis = new FileInputStream ( file ) ; } take hold of ( FileNotFoundException fnfe ) { fnfe . printStackTrace ( ) ; } finally { try { if ( fis != cipher ) fis . close ( ) ; } grab ( IOException ioe ) { ioe . printStackTrace ( ) ; } } } }

Output

java.io.FileNotFoundException: C:\dir_1 (Access is denied)     at java.io.FileInputStream.open(Native Method)     at coffee.io.FileInputStream.<init>(Unknown Source)     at com.javacodeexamples.exceptionexamples.AccessDeniedExample.main(AccessDeniedExample.coffee:22)

Fix:

Make sure that you lot are not trying to open a directory for reading or writing.

2) You practice not have permission to read the file

If you endeavor to open up and read a file for which you lot practise not take the read permission, y'all will go this exception.

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FileInputStream fis = nil ; try { //No read permission File file = new File ( "C:/dir_1/data.txt" ) ; fis = new FileInputStream ( file ) ; } catch ( FileNotFoundException fnfe ) { fnfe . printStackTrace ( ) ; } finally { attempt { if ( fis != null ) fis . close ( ) ; } grab ( IOException ioe ) { ioe . printStackTrace ( ) ; } }

Output

java.io.FileNotFoundException: C:\dir_1\data.txt (Admission is denied)     at java.io.FileInputStream.open(Native Method)     at java.io.FileInputStream.<init>(Unknown Source)     at com.javacodeexamples.exceptionexamples.AccessDeniedExample.master(AccessDeniedExample.java:54)

Fix:

Make sure yous have permission to read the file earlier opening and reading it.

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FileInputStream fis = null ; endeavor { //No read permission File file = new File ( "C:/dir_1/data.txt" ) ; if ( ! file . canRead ( ) ) file . setReadable ( true ) ; fis = new FileInputStream ( file ) ; } catch ( FileNotFoundException fnfe ) { fnfe . printStackTrace ( ) ; } finally { try { if ( fis != null ) fis . close ( ) ; } take hold of ( IOException ioe ) { ioe . printStackTrace ( ) ; } }

3) Trying to overwrite a read-simply file

If you try to overwrite a read-only file either using stream or writer, you will go the "Admission is denied" exception.

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bundle com . javacodeexamples . exceptionexamples ; import java . io . File ; import java . io . FileNotFoundException ; import java . io . FileOutputStream ; import coffee . io . IOException ; public class AccessDeniedExample { public static void main ( String [ ] args ) throws IOException { FileOutputStream fos = nada ; effort { //read only file with same proper noun already exists File file = new File ( "C:/dir_1/data.txt" ) ; /*              * Trying to overwrite a read only file!              */ fos = new FileOutputStream ( file ) ; } grab ( FileNotFoundException fnfe ) { fnfe . printStackTrace ( ) ; } finally { try { if ( fos != null ) fos . shut ( ) ; } grab ( IOException ioe ) { ioe . printStackTrace ( ) ; } } } }

Output

java.io.FileNotFoundException: C:\dir_1\data.txt (Access is denied)     at java.io.FileOutputStream.open(Native Method)     at java.io.FileOutputStream.<init>(Unknown Source)     at java.io.FileOutputStream.<init>(Unknown Source)     at com.javacodeexamples.exceptionexamples.AccessDeniedExample.master(AccessDeniedExample.java:37)

Fix:

Always check that if the file with the same name exists and it is not read-only before actually writing the file. If the file exists and it is read-only, make it writable as given in the below instance.

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package com . javacodeexamples . exceptionexamples ; import coffee . io . File ; import java . io . FileNotFoundException ; import java . io . FileOutputStream ; import coffee . io . IOException ; public class AccessDeniedExample { public static void main ( String [ ] args ) throws IOException { FileOutputStream fos = null ; endeavor { //read only file with aforementioned name already exists File file = new File ( "C:/dir_1/data.txt" ) ; /*              * Make sure that if the file exists, it is writable starting time              */ if ( file . exists ( ) && !file.canWrite()){                 Organisation.out.println("File exists and it is read just, making information technology writable"); file . setWritable ( true ) ; } fos = new FileOutputStream ( file ) ; System . out . println ( "File tin can be overwritten at present!" ) ; } catch ( FileNotFoundException fnfe ) { fnfe . printStackTrace ( ) ; } finally { try { if ( fos != null ) fos . close ( ) ; } catch ( IOException ioe ) { ioe . printStackTrace ( ) ; } } } }

Output

File exists and it is read only, making information technology writable File can exist overwritten now!

4) Trying to create a file in the root folder of the system bulldoze in Windows

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FileOutputStream fos = zippo ; effort { /*      * Trying to write a file in root binder      * of the windows arrangement drive.      */ File file = new File ( "C:/information.txt" ) ; fos = new FileOutputStream ( file ) ; } grab ( FileNotFoundException fnfe ) { fnfe . printStackTrace ( ) ; } finally { try { if ( fos != nil ) fos . shut ( ) ; } catch ( IOException ioe ) { ioe . printStackTrace ( ) ; } }

Ready:

In some versions of Windows, the system does not let some users to write to the root of the organisation bulldoze if they do non accept the required privileges. Try to create a file in a subfolder, for example, C:/somedir/somefile.txt instead of the root "C:/somefile.txt".

five) File is being used past another process

If the file is already opened exclusively by some other process, opening it for either reading or writing will cause java.io.FileNotFoundException (Access is denied) exception.

Ready:

Make sure that the file is not opened by whatever other programme or process.

This example is a part of the Java File tutorial.

Delight let me know your views in the comments section below.

About the author

My proper noun is RahimV and I have over 16 years of feel in designing and developing Java applications. Over the years I take worked with many fortune 500 companies equally an eCommerce Builder. My goal is to provide high quality only simple to understand Java tutorials and examples for free. If y'all similar my website, follow me on Facebook and Twitter.

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Source: https://www.javacodeexamples.com/java-io-filenotfoundexception-access-denied-causes-fix/1068

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