Java: Check if a file or directory has read and write permission

Last update on April 28 2025 07:37:18 (UTC/GMT +8 hours)

Write a Java program to check if a file or directory has read and write permissions.

Sample Solution:

Java Code:

import java.io.File;
public class Exercise4 {
       public static void main(String[] args) {
        // Create a File object
        File my_file_dir = new File("/home/students/abc.txt");
         if (my_file_dir.canWrite()) 
           {
            System.out.println(my_file_dir.getAbsolutePath() + " can write.\n");
           } 
         else
          {
            System.out.println(my_file_dir.getAbsolutePath() + " cannot write.\n");
          }
         if (my_file_dir.canRead()) 
           {
            System.out.println(my_file_dir.getAbsolutePath() + " can read.\n");
           } 
         else
          {
            System.out.println(my_file_dir.getAbsolutePath() + " cannot read.\n");
          }  
      }
  }
  

Sample Output:

/home/students/abc.txt can write.                                                                                    
/home/students/abc.txt can read.

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to check if a file or directory has both read and write permissions using Java NIO.
• Write a Java program to determine if a given file is readable, writable, and executable by the current user.
• Write a Java program to verify file permissions for a set of files in a directory and output those that lack proper access.
• Write a Java program to simulate permission checks by attempting to read and write a temporary file in a specified directory.

Java Code Editor:

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