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How to implement the search functionality of a JTable in Java?
A JTable is a subclass of JComponent for displaying complex data structures. A JTable component can follow the Model View Controller (MVC) design pattern for displaying the data in rows and columns. A JTable can generate TableModelListener, TableColumnModelListener, ListSelectionListener, CellEditorListener, RowSorterListener interfaces. We can implement the search functionality of a JTable by input a string in the JTextField, it can search for a string available in a JTable. If the string matches it can only display the corresponding value in a JTable. We can use the DocumentListener interface of a JTextField to implement it.
Example
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
public class JTableSearchTest extends JFrame {
private JTextField jtf;
private JLabel searchLbl;
private TableModel model;
private JTable table;
private TableRowSorter sorter;
private JScrollPane jsp;
public JTableSearchTest() {
setTitle("JTableSearch Test");
jtf = new JTextField(15);
searchLbl = new JLabel("Search");
String[] columnNames = {"Name", "Technology"};
Object[][] rowData = {{"Raja", "Java"},{"Vineet", "Java Script"},{"Archana", "Python"},{"Krishna", "Scala"},{"Adithya", "AWS"},{"Jai", ".Net"}};
model = new DefaultTableModel(rowData, columnNames);
sorter = new TableRowSorter<>(model);
table = new JTable(model);
table.setRowSorter(sorter);
setLayout(new FlowLayout(FlowLayout.CENTER));
jsp = new JScrollPane(table);
add(searchLbl);
add(jtf);
add(jsp);
jtf.getDocument().addDocumentListener(new DocumentListener() {
@Override
public void insertUpdate(DocumentEvent e) {
search(jtf.getText());
}
@Override
public void removeUpdate(DocumentEvent e) {
search(jtf.getText());
}
@Override
public void changedUpdate(DocumentEvent e) {
search(jtf.getText());
}
public void search(String str) {
if (str.length() == 0) {
sorter.setRowFilter(null);
} else {
sorter.setRowFilter(RowFilter.regexFilter(str));
}
}
});
setSize(475, 300);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setResizable(false);
setVisible(true);
}
public static void main(String[] args) {
new JTableSearchTest();
}
}Output
Updated on: 10-Feb-2020
2K+ Views
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