Mine

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

public class Oppg2 {
	
	String kilde, innfil, innstream;
	String inn;   String utfil;
	String ut;    
	
		
		  public Oppg2() throws IOException {
		  kilde = "Jeg elsker dama mi ";	
		 								innfil="D:\\workspace\\Obblig6\\src\\Filer\\fil.txt";
		  inn = "jeg";					utfil="D:\\workspace\\Obblig6\\src\\Filer\\fil.txt";
		  ut = "deg";
		  kilde = byttUt(kilde, ut, inn);
		  
		  
		  genererNyFil(innfil,utfil,kilde,innstream);
		 }
		 
		public String byttUt( String kilde, String ut, String inn )
		  {
			
			
			
				
			String ny = "";			
			
				ny = kilde.replaceAll(ut, inn) ;
				
		
			
			System.out.println(kilde.replaceAll(inn, ut));
			
         return ut;
		  }	  
		
		


public void genererNyFil( String innfil, String utfil, String utstream, String innstream ) throws IOException
		  {
	
		File fs = new File(utfil);
		FileWriter fw = new FileWriter(fs);
		BufferedWriter bw = new BufferedWriter(fw);
		
		
		fw.write(utstream);
		
		
		bw.close();
		fw.close();
		
		
		File fl = new File(innfil);
		FileReader fr = new FileReader(fl);
		BufferedReader br = new BufferedReader(fr);
		String line = br.readLine();
		if(line!= null)
		{
			//System.out.println(line);
			
		}
		
		
	
	
	
	
	
		    
		  }
		
		
		
		
}