Java Swing How to - Change cell contents on JTable

Question

We would like to know how to change cell contents on JTable.
Answer

// w  w  w. ja v a 2 s.c om
import java.awt.BorderLayout;
import java.util.Vector;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;

public class Main {
  public static void main(String args[]) {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    Vector<String> rowOne = new Vector<String>();
    rowOne.addElement("Row1-Column1");
    rowOne.addElement("Row1-Column2");
    rowOne.addElement("Row1-Column3");
    
    Vector<String> rowTwo = new Vector<String>();
    rowTwo.addElement("Row2-Column1");
    rowTwo.addElement("Row2-Column2");
    rowTwo.addElement("Row2-Column3");
    
    Vector<Vector> rowData = new Vector<Vector>();
    rowData.addElement(rowOne);
    rowData.addElement(rowTwo);
    
    Vector<String> columnNames = new Vector<String>();
    columnNames.addElement("Column One");
    columnNames.addElement("Column Two");
    columnNames.addElement("Column Three");
    JTable table = new JTable(rowData, columnNames);

    table.setValueAt("aa", 0, 0);    
    
    JScrollPane scrollPane = new JScrollPane(table);
    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);

  }
}