import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.table.*;
import javax.swing.event.*;
public class Estudos extends JFrame{
public Estudos(){
super("JTable");
// colunas da tabela
String[] colunas = {"Cidade", "Estado", "Habitantes"};
// conteúdo da tabela
Object[][] conteudo = {
{"Goiânia", "GO", "43.023.432"},
{"São Paulo", "SP", "5.343.234"},
{"Rio de Janeiro", "RJ", "6.434.212"},
{"Jussara", "GO", "87.454"},
{"Barra do Garças", "MT", "64.344"}
};
// constrói a tabela
JTable tabela = new JTable(conteudo, colunas);
tabela.setPreferredScrollableViewportSize(new Dimension(350, 50));
// adiciona o ouvidor de eventos
tabela.getModel().addTableModelListener(new MyTableModelListener(tabela));
Container c = getContentPane();
c.setLayout(new FlowLayout());
JScrollPane scrollPane = new JScrollPane(tabela);
c.add(scrollPane);
setSize(400, 300);
setVisible(true);
}
public static void main(String args[]){
Estudos app = new Estudos();
app.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
class MyTableModelListener implements TableModelListener{
JTable table;
MyTableModelListener(JTable table){
this.table = table;
}
public void tableChanged(TableModelEvent e){
int firstRow = e.getFirstRow();
int lastRow = e.getLastRow();
int coluna = e.getColumn();
switch(e.getType()){
case TableModelEvent.UPDATE:
for(int r = firstRow; r <= lastRow; r++){
System.out.println("A celula na posicao " +
r + "-" + coluna + " acaba se ser atualizada");
}
break;
}
}
}