File List

 1 public class Question1 {
 2 
 3     public static void main(String[] args) {
 4         String dir="";
 5         if(args.length!=1)
 6         {
 7             System.out.println("Please Enter Path of the Directory");
 8             System.exit(0);
 9         }else{
10             File f=new File(args[0]);
11             if(f.exists() && f.isDirectory())
12             {
13                 File[] list=f.listFiles();
14                 System.out.format("%-70s%-10s%-10s%-15s\n","Name","Size","Type","Last Modified");
15                 System.out.println("======================================================================================================================");
16                 for(File file:list){
17                     if(file.isDirectory())
18                         dir="<DIR>";
19                     else
20                         dir="";
21                     System.out.format("%-70s%-10s%-10s%-15s\n",file.getName(),file.length()/1024+" KB",dir,new Date(file.lastModified()));
22                 }
23             }
24             else
25                 System.out.println("Not an Existing Directory");
26         }
27     }
28 
29 }