How To Clear Input Field On Button Click Java Jframe Swing Tutorial – Netbeans

How To Clear Input Field On Button Click Java Jframe Swing Tutorial – Netbeans

How To Clear Input Field On Button Click Java Jframe Swing Tutorial – Netbeans

How To Clear Input Field On Button Click Java Jframe Swing Tutorial – Netbeans

The function below clears input boxes when Clear Button is clicked. You need to call the function in jbutton onclick event.

Clear Input Fields Function

    private void clearFields() {
        //clears/Resets textfield
        jTextFieldName.setText("");
	//clears/Resets button group 1
        buttonGroup1.clearSelection();
	//clears/Resets button group 2
        buttonGroup2.clearSelection();
	//clears/Resets jcombobox
        jComboBoxSubjects.setSelectedIndex(0);
	//clears/Resets image on jlabel
        jLabelImage.setIcon(null);
    }

How To Clear/Reset Input Field On Button Click Java Jframe Swing Tutorial - Netbeans
How To Clear Input Field On Button Click Java Jframe Swing Tutorial – Netbeans

Entire Source Code:

/*
 * How To Clear/Reset Input Field On Button Click Java Jframe Swing Tutorial - Netbeans
 */
package AddDataToJTable;

import java.awt.Component;
import java.awt.Image;
import java.io.File;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFileChooser;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTable;
import javax.swing.filechooser.FileNameExtensionFilter;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;

/**
 *
 * @author Genuine
 */
public class AddDataToJTable extends javax.swing.JFrame {

    /**
     * Creates new form AddDataToJTable
     */
    public AddDataToJTable() {
        initComponents();
        //Calling method/function to add column header to jtable
        addTableHeader();
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        buttonGroup1 = new javax.swing.ButtonGroup();
        buttonGroup2 = new javax.swing.ButtonGroup();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTable1 = new javax.swing.JTable();
        jTextFieldName = new javax.swing.JTextField();
        jLabel1 = new javax.swing.JLabel();
        jRadioButtonMale = new javax.swing.JRadioButton();
        jRadioButtonFemale = new javax.swing.JRadioButton();
        jCheckBoxJava = new javax.swing.JCheckBox();
        jCheckBoxPHP = new javax.swing.JCheckBox();
        jComboBoxSubjects = new javax.swing.JComboBox();
        jButton1 = new javax.swing.JButton();
        jLabelImage = new javax.swing.JLabel();
        jButtonBrowseImage = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jButton3 = new javax.swing.JButton();
        jButton4 = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jTable1.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {

            },
            new String [] {
                "null"
            }
        ));
        jTable1.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jTable1MouseClicked(evt);
            }
        });
        jScrollPane1.setViewportView(jTable1);

        jTextFieldName.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jTextFieldNameActionPerformed(evt);
            }
        });

        jLabel1.setText("Name");

        buttonGroup1.add(jRadioButtonMale);
        jRadioButtonMale.setText("Male");

        buttonGroup1.add(jRadioButtonFemale);
        jRadioButtonFemale.setText("Female");

        buttonGroup2.add(jCheckBoxJava);
        jCheckBoxJava.setText("Java");

        buttonGroup2.add(jCheckBoxPHP);
        jCheckBoxPHP.setText("PHP");

        jComboBoxSubjects.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Computer Science", "Information Technology", "Business Information Technology" }));

        jButton1.setText("Add Data");
        jButton1.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton1MouseClicked(evt);
            }
        });
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jButtonBrowseImage.setText("Browse //");
        jButtonBrowseImage.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButtonBrowseImageActionPerformed(evt);
            }
        });

        jButton2.setText("Move Up");
        jButton2.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton2MouseClicked(evt);
            }
        });
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });

        jButton3.setText("Move Down");
        jButton3.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton3ActionPerformed(evt);
            }
        });

        jButton4.setText("Clear");
        jButton4.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton4ActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addComponent(jRadioButtonMale)
                                    .addComponent(jCheckBoxJava))
                                .addGap(18, 18, 18)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addComponent(jCheckBoxPHP)
                                    .addComponent(jRadioButtonFemale)))
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jTextFieldName, javax.swing.GroupLayout.PREFERRED_SIZE, 97, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addGap(18, 18, 18)
                                .addComponent(jLabel1)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                .addComponent(jButtonBrowseImage, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)))
                        .addGap(10, 10, 10)
                        .addComponent(jLabelImage, javax.swing.GroupLayout.PREFERRED_SIZE, 146, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                    .addComponent(jComboBoxSubjects, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .addComponent(jButton2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                    .addComponent(jButton3, javax.swing.GroupLayout.DEFAULT_SIZE, 165, Short.MAX_VALUE)
                                    .addComponent(jButton4, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 150, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 534, Short.MAX_VALUE))
                        .addContainerGap())))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jLabelImage, javax.swing.GroupLayout.PREFERRED_SIZE, 121, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGroup(layout.createSequentialGroup()
                        .addContainerGap()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jTextFieldName, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(jLabel1)
                            .addComponent(jButtonBrowseImage, javax.swing.GroupLayout.PREFERRED_SIZE, 38, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jRadioButtonMale)
                            .addComponent(jRadioButtonFemale))
                        .addGap(18, 18, 18)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jCheckBoxJava)
                            .addComponent(jCheckBoxPHP))))
                .addGap(29, 29, 29)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jComboBoxSubjects, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 41, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                    .addComponent(jButton2, javax.swing.GroupLayout.DEFAULT_SIZE, 35, Short.MAX_VALUE)
                    .addComponent(jButton3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addComponent(jButton1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 251, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );

        pack();
        setLocationRelativeTo(null);
    }// </editor-fold>                        

    private void jTextFieldNameActionPerformed(java.awt.event.ActionEvent evt) {                                               
        // TODO add your handling code here:
    }                                              
    DefaultTableModel model;
    String name = "";
    String gender = "";
    String programmingLanguage = "";
    String Subject = "";
    String selectedImagePath = "";
//    byte imageJtable = new Byte(1024);

//Adding table headers
    public void addTableHeader() {
        model = (DefaultTableModel) jTable1.getModel();
        Object[] newIdentifiers = new Object[]{"Name", "Gender", "Language", "Subject", "Image"};
        model.setColumnIdentifiers(newIdentifiers);
        //Get Image column and override  TableCellRenderer class component method (getTableCellRendererComponent)
        jTable1.getColumn("Image").setCellRenderer(new myTableCellRenderer());

    }

    private void populateInputfields() {
        //        Display data from jtable in input fields
        int selectedRow = jTable1.getSelectedRow();

        jTextFieldName.setText(model.getValueAt(selectedRow, 0).toString());
        String tableGender = model.getValueAt(selectedRow, 1).toString();
        if (tableGender.equals("Male")) {
            jRadioButtonMale.setSelected(true);
        } else if (tableGender.equals("Female")) {
            jRadioButtonFemale.setSelected(true);
        }
        String checkPLanguage = model.getValueAt(selectedRow, 2).toString();

        if (checkPLanguage.equals("Java")) {
            jCheckBoxJava.setSelected(true);
        } else if (checkPLanguage.equals("PHP")) {
            jCheckBoxPHP.setSelected(true);
        }

        String comboSub = model.getValueAt(selectedRow, 3).toString();
        for (int i = 0; i < jComboBoxSubjects.getItemCount(); i++) {
            if (jComboBoxSubjects.getItemAt(i).toString().equalsIgnoreCase(comboSub)) {
                jComboBoxSubjects.setSelectedIndex(i);
            }
        }

        //The image is stored as ImageIcon in jlabel
        //The image is stored in the fourth column
        JLabel imageJl = (JLabel) model.getValueAt(selectedRow, 4);
        //Retrieving image icon from jlabel
        //Store image icon In ImageIcon type Variable
        ImageIcon imageJLIcon = (ImageIcon) imageJl.getIcon();
        //Resize image to fit to jlable
        Image imageJLFit = imageJLIcon.getImage().getScaledInstance(jLabelImage.getWidth(), jLabelImage.getHeight(), Image.SCALE_SMOOTH);
        //Display selected image on jlabel
        jLabelImage.setIcon(new ImageIcon(imageJLFit));

    }

    class myTableCellRenderer implements TableCellRenderer {

        @Override
        public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {

//            Change Image column minimum width and maximum width
            TableColumn tb = jTable1.getColumn("Image");
            tb.setMaxWidth(60);
            tb.setMinWidth(60);
            jTable1.setRowHeight(60);
            return (Component) value;

        }

    }


    private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {                                      
        // TODO add your handling code here:

    }                                     

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
        name = jTextFieldName.getText();
        if (jRadioButtonMale.isSelected()) {
            gender = "Male";
        } else if (jRadioButtonFemale.isSelected()) {
            gender = "Female";
        }

        if (jCheckBoxJava.isSelected()) {
            programmingLanguage = "Java";
        } else if (jCheckBoxPHP.isSelected()) {
            programmingLanguage = "PHP";
        }

        Subject = jComboBoxSubjects.getSelectedItem().toString();

        JLabel imageLabel = new JLabel();
        ImageIcon imageicon = new ImageIcon(selectedImagePath);
        //Resize image to fixed dimensions 60 * 60 (width and height).
        Image imageIc = imageicon.getImage().getScaledInstance(60, 60, Image.SCALE_SMOOTH);
        //Storing imageicon in a jlabel
        imageLabel.setIcon(new ImageIcon(imageIc));

        //Checking if one or more field is empty
        if (name.isEmpty() || gender.isEmpty() || programmingLanguage.isEmpty() || Subject.isEmpty() || imageIc == null) {
            JOptionPane.showMessageDialog(null, "One Or More Fields Are Empty");
        } else {
//            JOptionPane.showMessageDialog(null, "All Fields are filled");
            //Adding entered data to jtable

            model.addRow(new Object[]{name, gender, programmingLanguage, Subject, imageLabel});
            JOptionPane.showMessageDialog(null, "Data Inserted");
            //clear fields after inserting the data
            clearFields();
        }

    }                                        

    private void jTable1MouseClicked(java.awt.event.MouseEvent evt) {                                     
        // TODO add your handling code here:     

        //Display Selected row data in input field
        populateInputfields();

    }                                    

    private void jButtonBrowseImageActionPerformed(java.awt.event.ActionEvent evt) {                                                   
        // TODO add your handling code here:
//        Setting default browser location
        JFileChooser browseImageFile = new JFileChooser("C:\\Users\\Public\\Pictures\\Sample Pictures");
        //Filter image extensions
        FileNameExtensionFilter fnef = new FileNameExtensionFilter("IMAGES", "png", "jpg", "jpeg");
        browseImageFile.addChoosableFileFilter(fnef);
        int showOpenDialogue = browseImageFile.showOpenDialog(null);

        if (showOpenDialogue == JFileChooser.APPROVE_OPTION) {
            File selectedImageFile = browseImageFile.getSelectedFile();
            selectedImagePath = selectedImageFile.getAbsolutePath();
            JOptionPane.showMessageDialog(null, selectedImagePath);
            //Display image on jlable
            ImageIcon ii = new ImageIcon(selectedImagePath);
//            Resize image to fit jlabel
            Image image = ii.getImage().getScaledInstance(jLabelImage.getWidth(), jLabelImage.getHeight(), Image.SCALE_SMOOTH);

            jLabelImage.setIcon(new ImageIcon(image));
        }
    }                                                  

    //Move up button
    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
        //Get jtable selected row
        int currentlySelectedRow = jTable1.getSelectedRow();
        if (currentlySelectedRow > 0) {
//            Substact one (1) from current row to move upwards
            model.moveRow(currentlySelectedRow, currentlySelectedRow, currentlySelectedRow - 1);
            jTable1.getSelectionModel().setSelectionInterval(currentlySelectedRow - 1, currentlySelectedRow - 1);

        } else {
            JOptionPane.showMessageDialog(null, "You have reached the end!! Click move down button - to move downwards");
        }

    }                                        

    private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:

        //Get jtable selected row
        int currentlySelectedRow = jTable1.getSelectedRow();
        if (currentlySelectedRow < jTable1.getRowCount() - 1) {
//            Add one (1) To current row to move downwards
            model.moveRow(currentlySelectedRow, currentlySelectedRow, currentlySelectedRow + 1);
            jTable1.getSelectionModel().setSelectionInterval(currentlySelectedRow + 1, currentlySelectedRow + 1);

        } else {
            JOptionPane.showMessageDialog(null, "You have reached the end!! Click move up button - to move upwards");
        }


    }                                        

    private void jButton2MouseClicked(java.awt.event.MouseEvent evt) {                                      
        // TODO add your handling code here:
        //Display Selected row data in input field
    }                                     

    private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
        
        //Call function for clearing input fields
        clearFields();
        
    }                                        

    /**
     * @param args the command line arguments
     */
    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(AddDataToJTable.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(AddDataToJTable.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(AddDataToJTable.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(AddDataToJTable.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 AddDataToJTable().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.ButtonGroup buttonGroup1;
    private javax.swing.ButtonGroup buttonGroup2;
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JButton jButton4;
    private javax.swing.JButton jButtonBrowseImage;
    private javax.swing.JCheckBox jCheckBoxJava;
    private javax.swing.JCheckBox jCheckBoxPHP;
    private javax.swing.JComboBox jComboBoxSubjects;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabelImage;
    private javax.swing.JRadioButton jRadioButtonFemale;
    private javax.swing.JRadioButton jRadioButtonMale;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTable jTable1;
    private javax.swing.JTextField jTextFieldName;
    // End of variables declaration                   

    private void clearFields() {
        jTextFieldName.setText("");
        buttonGroup1.clearSelection();
        buttonGroup2.clearSelection();
        jComboBoxSubjects.setSelectedIndex(0);
        jLabelImage.setIcon(null);
    }

}

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