Question

Need help debugging DebugThirteen1.Java

Debug 13-1

DebugThirteen1.Java

// Program describes two files

// tells you which one is newer and which one is larger

import java.nio.file.*;

import java.nio.file.attribute.*;

import java.io.IOException;

public class DebugThirteen1

{

   public static void main(String[] args)

   {

      Path file1 =

         Paths.get("/root/sandbox/DebugDataOne1");

      Path file2 =

         Paths.get("/root/sandbox/DebugDataOne2.txt");

      try

      {

         BasicFileAttributes attr1 =

            Files.readAttributes(file1, BasicFileAttributes.class);

         System.out.println("File: " + file1getFileName());

         System.out.println("Creation time " + attr1.creationTime());

         System.out.println("Last modified time " + attr1lastModifiedTime());

         System.out.println("Size " + attr1.size());

         BasicFileAttributes attr2 =

            Files.readAttributes(file2, BasicFileAttributes.class);

         System.out.println("\nFile: " + file2.getFileName);

         System.out.println("Creation time " + attr2.creationTime());

         System.out.println("Last modified time " + attr2.lastModifiedTime());

         System.out.println("Size " + attr2.size());

         if(attr1.creationTime().compareto(attr2.creationTime()) > 0)

            System.out.println("\n" + file1.getFileName() + " was created earlier");

         else

            System.out.println("\n" + file1.getFileName() + " was not created earlier");

         if(attr1.size() > attr2.size())

            System.out.println(file1.getFileName() " is larger ");

         else

            System.out.println(file1.getFileName() " is not larger");

      }

      catch(IOException e)

      {

          System.out.println("IO Exception");

      }

   }

}

---------------------------------------------------------------------------------------------------------------------

DebugDataOne1.txt

   Somewhere over the rainbow.

------------------------------------------------------

DebugDataOne2.txt

   There's no place like home.

Are you a good witch or a bad witch?

-------------------------------------------------------

Answer 1

The code fixes have been explained with comments. Please let me know if there is any problem.

Code:

import java.nio.file.*;

import java.nio.file.attribute.*;

import java.io.IOException;

public class DebugThirteen1

{

public static void main(String[] args)

{

// Fix 1: Adding the extension to the file DebugDataone1

Path file1 = Paths.get("/root/sandbox/DebugDataOne1.txt");

Path file2 = Paths.get("/root/sandbox/DebugDataOne2.txt");

try

{

BasicFileAttributes attr1 = Files.readAttributes(file1, BasicFileAttributes.class);

// Fix 2: Calling the method getFileName which belongs to the object file1

System.out.println("File: " + file1.getFileName());

System.out.println("Creation time " + attr1.creationTime());

// Fix 3: Calling the method lastModifiedTime which belongs to the object attr1

System.out.println("Last modified time " + attr1.lastModifiedTime());

System.out.println("Size " + attr1.size());

BasicFileAttributes attr2 = Files.readAttributes(file2, BasicFileAttributes.class);

// Fix 4: The getFileName is a method, so after the method name the parantheses should be present which makes it a valid method call

System.out.println("\nFile: " + file2.getFileName());

System.out.println("Creation time " + attr2.creationTime());

System.out.println("Last modified time " + attr2.lastModifiedTime());

System.out.println("Size " + attr2.size());

// Fix 5: Here the method name is compareTo not compareto

if(attr1.creationTime().compareTo(attr2.creationTime()) > 0)

{

System.out.println("\n" + file1.getFileName() + " was created earlier");

}

else

{

System.out.println("\n" + file1.getFileName() + " was not created earlier");

}

if(attr1.size() > attr2.size())

{

// Fix 6: Here two strings need to be concatenated so a + sign should exist between the two strings

System.out.println(file1.getFileName() + " is larger ");

}

else

{

// Fix 7: Here two strings need to be concatenated so a + sign should exist between the two strings

System.out.println(file1.getFileName() + " is not larger");

}

}

catch(IOException e)

{

System.out.println("IO Exception");

}

}

}

Sample Output: