import java.io.*;
import java.util.*;

public class CopyTextFile {
  public static void main(String [] args) {
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter src filename: ");
    String readFilename = sc.next();
    File readFile = new File(readFilename);
    
    if( !readFile.isFile() ) {
      System.err.println("Input file does not exist or is not a regular file!");
      return;
    }
    if( !readFile.canRead() ) {
      System.err.println("Input file is not readable!");
      return;
    }
    
    System.out.print("Enter dst filename: ");
    String writeFilename = sc.next();
    File writeFile = new File(writeFilename);
    
    if( writeFile.exists() ) {
      System.err.println("Output file exists! Unable to overwrite.");
      return;
    }
    
    try {
      String input;
      BufferedReader in = new BufferedReader(new FileReader(readFile));
      PrintWriter out = new PrintWriter(writeFile);
      while( (input = in.readLine()) != null ) {
        out.println(input);
      }
      out.close();
      in.close();
    } catch( IOException ex ) {
      ex.printStackTrace();
    }
  }
}