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Thread: Reading File problem

  1. #1
    Junior Member
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    Post Reading File problem

    how do access reading a text file to Login ?

    Here the problem!
    lgnbb.addActionListener(new ActionListener(){
    public void actionPerformed(ActionEvent ee){

    String acc,code;

    BufferedReader reader = null;
    String text= "";
    acc = txf1.getText();
    code = txf2.getText();
    if((txf1.getText().equals(""))||(txf2.getText().eq uals("")))
    {
    JOptionPane.showMessageDialog(null,
    "Please Type!!",
    "Incomplete",
    JOptionPane.WARNING_MESSAGE);
    }else{


    try{
    File file = new File("Database.txt");
    reader = new BufferedReader(new FileReader(file));
    String []data = text.split("\t");
    String accno = data[0];
    int cd = Integer.parseInt(data[1]);

    if((txf1.getText().equals(accno))||
    (txf2.getText().equals(cd))){
    JOptionPane.showMessageDialog(null,
    "Login Success!!!",
    "Login-Successfully!!!",
    JOptionPane.INFORMATION_MESSAGE);

    while((text=reader.readLine())!=null){
    WelcomeAcc exe = new WelcomeAcc();
    exe.wcAcc();
    dispose();
    }




    }

    }
    catch (FileNotFoundException ex){
    ex.printStackTrace();
    } catch (IOException ex) {
    ex.printStackTrace();
    } finally {
    try {
    if (reader != null){
    reader.close();
    }
    } catch (IOException ex) {
    ex.printStackTrace();
    }
    }
    }

    }
    });
    Here the first Code:
    import javax.swing.*;
    import java.awt.event.*;
    import java.awt.*;
    import java.io.*;
     
    public class LoginBank extends JFrame {
         private JButton back, lgnbb, clear, pcode;
         private JTextField txf1;
         private JPasswordField txf2;
         private JLabel ln,pd;
     
         public void lgBank (){
     
     
         	ln = new JLabel("Account No. : ");
    		ln.setFont(new Font("Serif", Font.BOLD, 24));
    		ln.setForeground(Color.BLACK);
    		ln.setLocation(20,23);
    		ln.setSize(200,30);
     
         	pd = new JLabel("Password: ");
    		pd.setFont(new Font("Serif", Font.BOLD, 24));
    		pd.setForeground(Color.BLACK);
    		pd.setLocation(20,60);
    		pd.setSize(200,30);
     
    		txf1 = new JTextField(20);
    		txf1.setBackground(new Color(204,204,255));
    		txf1.setLocation(170,25);
    		txf1.setFont(new Font("Serif", Font.PLAIN, 20));
    		txf1.setToolTipText("Type your Account ID or Number in textbox.");
    		txf1.setSize(200,25);
    		txf1.setHorizontalAlignment(JTextField.LEFT);
     
    		txf2 = new JPasswordField(20);
    		txf2.setBackground(new Color(204,204,255));
    		txf2.setLocation(170, 65);
    		txf2.setEchoChar('*');
    		txf2.setFont(new Font("Serif", Font.PLAIN, 20));
    		txf2.setToolTipText("Type 8-16 characters.");
    		txf2.setSize(200,25);
    		txf2.setHorizontalAlignment(JTextField.LEFT);
     
    		ImageIcon bcr = new ImageIcon(getClass().getResource("/images/bcr.jpg"));
    		final JButton back = new JButton(bcr);
    		back.setLocation(20,120);
    		back.setSize(70,30);
    		back.setPreferredSize(new Dimension(90,30));
    		back.addActionListener(new ActionListener(){
    		public void actionPerformed(ActionEvent e){
    			dispose();
    			}
    		}
    		);
     
    		ImageIcon lll = new ImageIcon(getClass().getResource("/images/loginn.jpg"));
    		final JButton lgnbb = new JButton(lll);
    		lgnbb.setLocation(100, 120);
    		lgnbb.setSize(70,40);
    		lgnbb.setPreferredSize(new Dimension(70,40));
    		lgnbb.addActionListener(new ActionListener(){
    		public void actionPerformed(ActionEvent ee){
     
    			String acc,code;
     
    						BufferedReader reader = null;
    						String text= "";
                    acc = txf1.getText();
                    code = txf2.getText();
                    if((txf1.getText().equals(""))||(txf2.getText().equals("")))
                    	{
    				JOptionPane.showMessageDialog(null,
    					"Please Type!!",
    					"Incomplete",
    					JOptionPane.WARNING_MESSAGE);
    			}else{
     
     
    					try{
    						File file = new File("Database.txt");
    						reader = new BufferedReader(new FileReader(file));
    						String []data = text.split("\t");
    						String accno = data[0];
    						int cd = Integer.parseInt(data[1]);
     
    						if((txf1.getText().equals(accno))||
    							(txf2.getText().equals(cd))){
    								JOptionPane.showMessageDialog(null,
    								"Login Success!!!",
    								"Login-Successfully!!!",
    								JOptionPane.INFORMATION_MESSAGE);
     
    							while((text=reader.readLine())!=null){
                    				WelcomeAcc exe = new WelcomeAcc();
    								exe.wcAcc();
    								dispose();
                				}
     
     
     
     
    							}
     
    						}
    						catch (FileNotFoundException ex){
    		          			ex.printStackTrace();
    		      			} catch (IOException ex) {
    		           			 ex.printStackTrace();
    		       			} finally {
    		        		    try {
    		            		   	if (reader != null){
    		                			reader.close();
    		              		}
    		           		} catch (IOException ex) {
    		            		    ex.printStackTrace();
    		           	}
    		        }
    		         }
     
    		}
    		});
     
    		ImageIcon cle = new ImageIcon(getClass().getResource("/images/clear.jpg"));
    		final JButton clear = new JButton(cle);
    		clear.setLocation(190,120);
    		clear.setSize(70,40);
    		clear.setPreferredSize(new Dimension(90,50));
    		clear.addActionListener(new ActionListener(){
    		public void actionPerformed(ActionEvent eee){
    			txf1.setText("");
    			txf2.setText("");
    			}
    		}
    		);
     
    		ImageIcon pco = new ImageIcon(getClass().getResource("/images/pcode.jpg"));
    		final JButton pcode = new JButton(pco);
    		pcode.setLocation(280,120);
    		pcode.setSize(70,40);
    		pcode.setPreferredSize(new Dimension(70,40));
    		pcode.addActionListener(new ActionListener(){
    		public void actionPerformed(ActionEvent eeee){
    			PinBank pbnk = new PinBank();
    			pbnk.pinBnk();
    			}
    		}
    		);
     
    		Container pane = getContentPane();
    		pane.setLayout(null);
    		pane.add(lgnbb);
    		pane.add(clear);
    		pane.add(pcode);
    		pane.add(back);
    		pane.add(ln);
    		pane.add(pd);
    		pane.add(txf1);
    		pane.add(txf2);
     
    		setIconImage(new ImageIcon("icon1.jpg").getImage());
    		setLayout(new BorderLayout());
    		JLabel lgn = new JLabel(new ImageIcon(getClass().getResource("/images/lgn.jpg")));
    		add(lgn);
    		setDefaultCloseOperation(DISPOSE_ON_CLOSE);
    		setTitle("Login Account");
    		setSize(400,220);
    		setResizable(false);
    		setVisible(true);
    		setLocation(120, 300);
     
         }
    }

    Here the second Code for login window:
    import javax.swing.*;
    import java.awt.event.*;
    import java.awt.*;
     
    public class WelcomeAcc extends JFrame {
         private JButton back;
     
         public void wcAcc (){
    		ImageIcon bcr = new ImageIcon(getClass().getResource("/images/bcr.jpg"));
    		final JButton back = new JButton(bcr);
    		back.setLocation(20,480);
    		back.setSize(70,30);
    		back.setPreferredSize(new Dimension(90,30));
    		back.addActionListener(new ActionListener(){
    		public void actionPerformed(ActionEvent e){
    			dispose();
    			}
    		}
    		);
     
    		Container pane = getContentPane();
    		pane.setLayout(null);
    		pane.add(back);
     
    		setIconImage(new ImageIcon("/images/icon.jpg").getImage());
    		setLayout(new BorderLayout());
    		JLabel www=new JLabel(new ImageIcon("/images/welcome.jpg"));
    		add(www);
    		setDefaultCloseOperation(DISPOSE_ON_CLOSE);
    		setTitle("Change Pin Code");
    		setSize(650,550);
    		setResizable(false);
    		setVisible(true);
    		setLocation(180, 5);
         }
    }


  2. #2
    Super Moderator Norm's Avatar
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    Eastern Florida
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    Default Re: Reading File problem

    Please explain what the problem is? What happens when you compile and execute the program?
    If there are errors, copy the full text and paste it here.
    If the results are not what you want, copy and paste the results here and explain what is wrong and show what the output should be.
    If you don't understand my answer, don't ignore it, ask a question.

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