BCA Slip12 Java

Java

Slip12

Q.1) Write a java program to accept list of file names through command line and delete the files having extension “.txt”. Display the details of remaining files such as FileName and size. [Marks 30] 

Solution

import java.io.*;
class Delete
{
  public static void main(String args[]) throws Exception
 {
    String str[]=new String[100];
   // Vector list=new Vector();
    for(int i=0;i<args.length;i++)
    {
        File file=new File(args[i]);
        if(file.isFile())
   {
     System.out.println(args[i]+"\t"+file.length());
   }
   else
  {
      System.out.println(args[i]+ " is not a file");
   }
    }
    File dirs = new File(new File(".").getAbsolutePath());
    str = dirs.list();  // to delete all .html files of current directory
    //to use vector
   /* for(int i=0;i<args.length;i++)
    {
       list.addElement(args[i]);
    }
     list.copyInto(str);
   */

    for(int i=0;i<str.length;i++)
    {
       if(str[i].endsWith("txt"))
       {
            File tmp=new File(str[i]);
            if(tmp.delete())
    {
    System.out.println("File Deleted");
    }
         }
      }
 }
}