Efficient way to delete a line from a text file

Question

I need to delete a certain line from a text file. What is the most efficient way of doing this? File can be potentially large(over million records).

UPDATE: below is

Answer 1

     try{
     Scanner reader = new Scanner(new File("D:/seenu.txt")); 
     System.out.println("Enter serial number:");
     String sl1=bufRead.readLine();
     System.out.print("Please Enter The ServerName:");
     String name=bufRead.readLine();
     System.out.println("Please Enter The IPAddress");
     String ipa=bufRead.readLine();

    System.out.println("Line Deleted.");
     PrintWriter writer = new PrintWriter(new FileWriter(new File("D:/user.txt")),true); 
     //for(int w=0; w