Thread: Button to save data in text fields to a File

Hello All, Good day! I'm new in Java and Hopefully you can help me with my first post

I have a form with text fields (txt_field1, txt_field2, txt_field3) radiobutton (rad_btn1, rad_btn2) and button (btn_save, btn_cancel)

I just want, when the user input a data in txt_field1,txt_field2,txt_field3, choose rad_btn1 and click btn_save, it will save in a file prompting "Please enter file name to save" and then it will message "File has been successfully created".

txt_field = String
txt_field1 = double
txt_field2 = double

Below is the only code that i have

 
package finalassignment;
 
 
public class JFrameNewAccount extends javax.swing.JFrame {
 
      public JFrameNewAccount() {
        initComponents();
    }
 
        @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {
 
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        rad_savings = new javax.swing.JRadioButton();
        rad_checking = new javax.swing.JRadioButton();
        jLabel4 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();
        jLabel6 = new javax.swing.JLabel();
        btn_newaccountsave = new javax.swing.JButton();
        btn_newaccountcancel = new javax.swing.JButton();
        txt_accountnumber = new javax.swing.JTextField();
        txt_accountname = new javax.swing.JTextField();
        txt_initialbalance = new javax.swing.JTextField();
        txt_overdraft = new javax.swing.JTextField();
        txt_interestrate = new javax.swing.JTextField();
 
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("NEW ACCOUNT");
 
        jLabel1.setText("Account Number:");
 
        jLabel2.setText("Account Name:");
 
        jLabel3.setText("Type:");
 
        rad_savings.setText("Savings");
 
        rad_checking.setText("Checking");
 
        jLabel4.setText("Initial Balance:");
 
        jLabel5.setText("Overdraft:");
 
        jLabel6.setText("Interest Rate:");
 
        btn_newaccountsave.setText("Save");
        btn_newaccountsave.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btn_newaccountsaveActionPerformed(evt);
            }
        });
 
        btn_newaccountcancel.setText("Cancel");
        btn_newaccountcancel.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btn_newaccountcancelActionPerformed(evt);
            }
        });
 
        txt_accountnumber.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
        txt_accountnumber.setHorizontalAlignment(javax.swing.JTextField.CENTER);
 
        txt_accountname.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
        txt_accountname.setHorizontalAlignment(javax.swing.JTextField.CENTER);
 
        txt_initialbalance.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
        txt_initialbalance.setHorizontalAlignment(javax.swing.JTextField.CENTER);
 
        txt_overdraft.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
        txt_overdraft.setHorizontalAlignment(javax.swing.JTextField.CENTER);
 
        txt_interestrate.setFont(new java.awt.Font("Tahoma", 1, 11)); // NOI18N
        txt_interestrate.setHorizontalAlignment(javax.swing.JTextField.CENTER);
 
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(30, 30, 30)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                        .addComponent(jLabel6, javax.swing.GroupLayout.PREFERRED_SIZE, 75, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGroup(layout.createSequentialGroup()
                            .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 91, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                            .addComponent(txt_accountnumber, javax.swing.GroupLayout.PREFERRED_SIZE, 150, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGroup(layout.createSequentialGroup()
                            .addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 81, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .addComponent(txt_accountname, javax.swing.GroupLayout.PREFERRED_SIZE, 150, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGroup(layout.createSequentialGroup()
                            .addComponent(jLabel3)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .addComponent(rad_savings)
                            .addGap(18, 18, 18)
                            .addComponent(rad_checking))
                        .addGroup(layout.createSequentialGroup()
                            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                                .addComponent(jLabel5, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                .addComponent(jLabel4, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.PREFERRED_SIZE, 84, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addGap(18, 18, 18)
                            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                .addComponent(txt_interestrate)
                                .addComponent(txt_initialbalance)
                                .addComponent(txt_overdraft, javax.swing.GroupLayout.PREFERRED_SIZE, 149, javax.swing.GroupLayout.PREFERRED_SIZE))))
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addComponent(btn_newaccountsave, javax.swing.GroupLayout.PREFERRED_SIZE, 78, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(30, 30, 30)
                        .addComponent(btn_newaccountcancel, javax.swing.GroupLayout.PREFERRED_SIZE, 79, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(10, 10, 10)))
                .addContainerGap(43, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(26, 26, 26)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(txt_accountnumber, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel2)
                    .addComponent(txt_accountname, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel3)
                    .addComponent(rad_savings)
                    .addComponent(rad_checking))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel4)
                    .addComponent(txt_initialbalance, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jLabel5)
                    .addComponent(txt_overdraft, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel6)
                    .addComponent(txt_interestrate, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(27, 27, 27)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(btn_newaccountsave, javax.swing.GroupLayout.PREFERRED_SIZE, 28, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(btn_newaccountcancel, javax.swing.GroupLayout.PREFERRED_SIZE, 28, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addContainerGap(28, Short.MAX_VALUE))
        );
 
        pack();
    }// </editor-fold>                        
 
    private void btn_newaccountcancelActionPerformed(java.awt.event.ActionEvent evt) {                                                     
        this.setVisible(false);
    }                                                    
 
    private void btn_newaccountsaveActionPerformed(java.awt.event.ActionEvent evt) {                                                   
 
 
 
    }                                                  
 
 
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(JFrameNewAccount.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(JFrameNewAccount.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(JFrameNewAccount.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(JFrameNewAccount.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>
 
        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new JFrameNewAccount().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify                     
    private javax.swing.JButton btn_newaccountcancel;
    private javax.swing.JButton btn_newaccountsave;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JRadioButton rad_checking;
    private javax.swing.JRadioButton rad_savings;
    private javax.swing.JTextField txt_accountname;
    private javax.swing.JTextField txt_accountnumber;
    private javax.swing.JTextField txt_initialbalance;
    private javax.swing.JTextField txt_interestrate;
    private javax.swing.JTextField txt_overdraft;
    // End of variables declaration                   
}

Hi Kevin, I just want when the user click the 'Save' button, all data in textfields will write to a file, the problem is i don't know when I'll start

Hi Kevin, i can write a file using console, but i don't know how to convert it to a button when clicked.

Here's what i got.

 
package com.ittc;
 
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
 
public class WriteFile {
    public static void main(String args[]) throws IOException {
        System.out.println("What is the name of the file to be written to ?");
 
        String filename;
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        filename = br.readLine();
        System.out.println("Enter data to write to " + filename + "...");
        System.out.println("Type q to end.");
        FileOutputStream fos = null;
        try {
            fos = new FileOutputStream(filename);
        } catch (FileNotFoundException ex) {
            System.out.println("File cannot be opened for writing.");
        }
 
        try {
            boolean done = false;
            int data;
            do {
                data = br.read();
                if ((char) data == 'q') {
                    data = br.read();
                    if ((char) data == '$') {
                        done = true;
                    } else {
                        fos.write('q');
                        fos.write(data);
                    }
                } else {
                    fos.write(data);
                }
            } while (!done);
        } catch (IOException ex) {
            System.out.println("Problem in reading from the file.");
        }
    }
}

Could you please cite me an example/logic on how to do it inside a button?

Here's what I've got.

 
 btnSaveA.addActionListener(new ActionListener() {
 
            public void actionPerformed(ActionEvent e) throws IOException{ //should it be here?
 
                String filename;
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        filename = br.readLine(); // is it correct to place it here? AFAIK all actions should place in action event. Also, it gives me error 'IOException'. I don't know where to place the 'throws IOException'
 
 
                txt_accountname.getText();
                txt_accountnumber.getText();
                txt_initialbalance.getText();
                txt_overdraft.getText();
                if (rad_savings.isSelected()){
                    rad_savings.getText();
                }
                else{
                    rad_checking.getText();
                }
            }
 
        });
        btnSaveA.addActionListener(new ActionListener(){
            private Component frame;
            public void actionPerformed(ActionEvent e){
                System.out.println("Account has been created..");
 
            }
 
        });
     }

actually, it's not yet finish, once the textfields has been filled up and radiobutton has been picked, btnSaveA will get that texts and then write it a file. Actually, I've still in getting the text, and i having an error when coding the 'write it to a file'.