Advertisement
Guest User

Untitled

a guest
Jun 23rd, 2017
56
0
Never
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
text 1.17 KB | None | 0 0
  1. package bokreg;
  2. import java.io.*;
  3. /**
  4. *
  5. * @author Vitor.Evertsson
  6. */
  7. public class data {
  8. public String totrad = "";
  9. //metod som läser data från tetfilen data.txt
  10. public String dataut(){
  11.  
  12. return totrad;
  13. }
  14.  
  15.  
  16. //metod som läser skriver från tetfilen data.txt
  17. public String datawrite(String in){
  18. try{
  19.  
  20. RandomAccessFile utfil = new RandomAccessFile("data.txt", "rw");
  21. utfil.seek(utfil.length());
  22. utfil.write(in.getBytes());
  23. utfil.close();
  24.  
  25.  
  26. }
  27. catch(IOException e1){
  28. System.out.print("Error e1");
  29.  
  30. }
  31.  
  32.  
  33.  
  34. return "Data lagrad";
  35.  
  36. }
  37.  
  38.  
  39. // metod som raderar data ur filen data.txt
  40. public String deletedata(){
  41. try{
  42. PrintWriter utfil = new PrintWriter
  43. (new BufferedWriter
  44. (new FileWriter("data.txt")),true);
  45.  
  46. utfil.println("");
  47.  
  48. utfil.close();
  49. }
  50. catch(IOException e1){
  51. System.out.print("Error e1");
  52.  
  53. }
  54.  
  55. return "Data raderad";
  56. }
  57.  
  58.  
  59.  
  60.  
  61.  
  62. }
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement