How to Show And Hide Password Inside a JTable Cell In Java Netbeans
In this Java Tutorial we will see How To Create a JTable allowing the user to toggle the visibility of passwords using a checkbox in the "Show-Password" column. In Java Using Netbeans.
What We Are Gonna Use In This Project:
- Java Programming Language.- NetBeans Editor.
Project Source Code:
package new_tutorials;
import java.awt.Component;
import java.awt.Font;
import javax.swing.AbstractCellEditor;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingConstants;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellEditor;
/**
*
* @author 1BestCsharp
*/
public class PasswordTableFrame extends JFrame{
public PasswordTableFrame(){
setTitle("Password Table Frame");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(600,400);
setLocationRelativeTo(null);
initializeUI();
}
private void initializeUI(){
// Create a table with a custom table model
JTable table = new JTable(new PasswordTableModel());
// Set custom cell renderer and editor for the "Show Password" column
table.getColumnModel().getColumn(2).setCellRenderer(new CheckBoxRenderer());
table.getColumnModel().getColumn(2).setCellEditor(new CheckboxEditor());
table.setFont(new Font("Arial",Font.PLAIN,22));
table.setRowHeight(50);
JScrollPane scrollPane = new JScrollPane(table);
add(scrollPane);
}
public static void main(String[] args) {
PasswordTableFrame frame = new PasswordTableFrame();
frame.setVisible(true);
}
// Create a custom table model to handle password display
private class PasswordTableModel extends AbstractTableModel{
private final String[] columnNames = {"Username","Password","Show-Password"};
private final Object[][] data = {
{"user1", "password1", false},
{"user2", "password2", false},
{"user3", "password3", false},
{"user4", "password4", false},
{"user5", "password5", false}
};
@Override
public int getRowCount() { return data.length; }
@Override
public int getColumnCount() { return columnNames.length; }
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
// Hide the password if "Show Password" is unchecked
if(columnIndex == 1 && ! (boolean) data[rowIndex][2]){
return "**********";
}
else{ return data[rowIndex][columnIndex]; }
}
@Override
public String getColumnName(int columnIndex){
return columnNames[columnIndex];
}
@Override
public boolean isCellEditable(int rowIndex, int columnIndex){
return columnIndex == 2;
}
@Override
public void setValueAt(Object value, int rowIndex, int columnIndex){
// Update the "Password" column when "Show Password" checkbox is modified
if(columnIndex == 2){
data[rowIndex][columnIndex] = value;
fireTableCellUpdated(rowIndex, columnIndex - 1);
}
}
}
// Create a custom cell renderer for the checkbox
private class CheckBoxRenderer extends DefaultTableCellRenderer{
private final JCheckBox checkBox = new JCheckBox();
public CheckBoxRenderer(){
checkBox.setHorizontalAlignment(SwingConstants.CENTER);
}
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column){
checkBox.setSelected((boolean)value);
return checkBox;
}
}
// Create a custom cell editor for the checkbox
private class CheckboxEditor extends AbstractCellEditor implements TableCellEditor{
private final JCheckBox checkBox = new JCheckBox();
public CheckboxEditor(){
checkBox.addActionListener(e -> stopCellEditing());
checkBox.setHorizontalAlignment(SwingConstants.CENTER);
}
@Override
public Object getCellEditorValue() {
return checkBox.isSelected();
}
@Override
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
checkBox.setSelected((boolean) value);
return checkBox;
}
}
}
The Final Result:
.png "Show Password Inside a JTable Cell In Java")
.png "Show And Hide Password Inside a JTable Cell In Java")
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