public static void LoginText(){ 
  		if(userarea.getText().equals("")||passarea.getText().equals("")){ 
  			JOptionPane.showMessageDialog(null, "Enter a username and password!", "Error Message", JOptionPane.ERROR_MESSAGE); 
  			Login.f.repaint(); 
  		}else{                     
  		try{ 
  			File file = new File("Users.txt"); 
  			Scanner input = new Scanner(file); 
  			 
  			while(input.hasNext()){			 
  			String user = input.next(); 
                              System.out.println(user); 
   
  			if(userarea.getText().equals(user)){ 
  				String pass = input.next(); 
                                  System.out.println(pass); 
  				if(pass.equals(passarea.getText())){ 
  					// asıl program burada başlayacak 
  				}else{ 
  					JOptionPane.showMessageDialog(null, "Wrong Username or Password!", "Error Message", JOptionPane.ERROR_MESSAGE); 
  					Login.f.repaint(); 
  					passarea.setText(""); 
  				}                                 
  			}else{   //sıkıntı burada başlıyor                          
                              JOptionPane.showMessageDialog(null, "Wrong Username or Password!", "Error Message", JOptionPane.ERROR_MESSAGE); 
                              Login.f.repaint();                            
                          }			 
  			}			 
  			 
  		}catch(Exception e){ 
  			System.err.println("Error : " + e.getMessage()); 
  		} 
  		} 
   
  	}