Java File Handling

/*

Write a Java program that reads a file name from the user, displays information about whether the file exists, whether the file is readable, or writable, the type of file and the length of the file in bytes.

*/

 

import java.io.*;

 

class FileHandling

{

     public static void main(String as[]) throws IOException

     {

          BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

          System.out.print(“Enter string : “);

          String str = br.readLine().trim();

         

          File f1 = new File(str);

         

          if (f1.isFile()==true)

          {

             

              System.out.println(“File exists = ” + f1.exists());

             

              System.out.println(“File name = ” + f1.getName());

              System.out.println(“Parent File = ” + f1.getParent());

             

              System.out.println(“File path = ” + f1.getPath());

              System.out.println(“If absolute path of file is specified = “+f1.isAbsolute());

              if(f1.isAbsolute()==true)

                   System.out.println(“File absolute path = “+f1.getAbsolutePath());

             

              System.out.println(“File type = ” + str.substring(str.lastIndexOf(‘.’)));

    

    

              System.out.println(“File readable = ” + f1.canRead());

              System.out.println(“File writable = ” + f1.canWrite());        

             

              System.out.println(“File last modified = ” + f1.lastModified());

                  

              System.out.println(“File length = ” + f1.length() + ” bytes”);

 

              }       

          else

              System.out.println(“Not a file”);

     }

}

 

 

 

/*

 

Sample output:

 

     D:\oopjava\iostreams>javac FileHandling.java

     D:\oopjava\iostreams>java FileHandling

 

     Enter string : FileHandling.java

     File exists = true

     File name = FileHandling.java

     Parent File = null

     File path = FileHandling.java

     If absolute path of file is specified = false

     File type = .java

     File readable = true

     File writable = true

     File last modified = 1537860249825

     File length = 1396 bytes

 

     D:\oopjava\iostreams>

 

 

*/