import java.io.EOFException;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.util.Scanner;

public class Randomaccessfile {

	public static void Create(String inputfile, String outputfile) throws IOException
	{
		Scanner user = new Scanner(System.in);

		System.out.println("Please Enter an input file name:");
		inputfile = user.nextLine();

		File file = new File(inputfile + ".txt");

		//Create the file
		if (file.createNewFile()){
		System.out.println("File is created!");
		}else{
		System.out.println("File already exists. ");
		}

		//Write Content
		FileWriter writer = new FileWriter(file);
		writer.write("Test data"); 											//delete when done
		writer.close();


		//Delete old file if it exists
		if (file.exists()){
		    file.delete();
		    FileWriter writer1 = new FileWriter(file + ".txt");
		    writer1.write("replaced"); 											//delete when done
		    writer1.close();
		}

		//Create output file
		System.out.println("Please Enter an output file name:");
		outputfile = user.nextLine();

		File file2 = new File(outputfile);

		//Delete old file if it exists
		if (file2.exists()){
		    file2.delete();
		    FileWriter writer2 = new FileWriter(file2);
		    writer2.write("replaced"); 											//delete when done
		    writer2.close();
		}

	    //Create the file
		if (file.createNewFile()){
			System.out.println("File is created!");
			}else{
			System.out.println("File already exists. ");
			}

		// Create input and output file streams
		Scanner fin = new Scanner (new FileInputStream(file));
		RandomAccessFile raf = new RandomAccessFile(file2, "rw");
		Student rec = new Student();
		raf.close();
		fin.close();
		user.close();

	}

	public static void File() throws IOException{
		Scanner scanner = new Scanner(System.in);
		String filename = ("");
    	System.out.println("Which file would you like work with?");
    	filename = scanner.nextLine();
    	RandomAccessFile raf = new RandomAccessFile(filename + ".txt", "rw");
    	scanner.close();

	}

	public static void Display(Student rec, RandomAccessFile raf) throws IOException{
		File();
		print(raf,rec);
		raf.close();

	}

	public static void print (RandomAccessFile raf, Student rec) throws IOException
	{
		raf.seek(0);
		try {
			while (true){
				rec.readFromFile(raf);
				System.out.println(rec);
			}
		}
		catch (EOFException e){

		}
		raf.close();
	}

	public static void Add(RandomAccessFile raf, Student rec) throws IOException
	{
		File();
		Scanner keyIn = new Scanner(System.in);
		// Write a new record to the end of the random access file
		System.out.print("Enter your first name, last name, student ID, and GPA: ");
		rec.readFromTextFile(keyIn);
		raf.seek(raf.length());
		rec.writeToFile(raf);
		System.out.println("Record with new addition:");
		print (raf, rec);

		raf.close();
	}

}