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);
}
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);
}
}
