/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package tabeldinamic;
import java.awt.*;
import java.awt.GridLayout;
import java.awt.event.*;
import java.util.ArrayList;
import javax.swing.*;
import javax.swing.table.*;
public class TabelDinamic extends JFrame{
private JTable tabel;
private String [][] date;
private String[] numeColoane;
private ArrayList <JButton> butoane;
private TableColumnModel mc;
private DefaultTableModel mt;
private int nrLinii, nrCol;
public TabelDinamic(){
    super("Operatii cu tabel");
    nrLinii=10;
    nrCol=5;
    date = new String [10][5];
    for(int i=0;i<nrLinii;i++)
        for(int j=0;j<nrCol;j++)
            date[i][j]=(i+j)+"";
    numeColoane = new String [5];
    for(int i=0;i<5;i++)
        numeColoane[i]="Coloana"+(i+1);
    tabel = new JTable(date,numeColoane);
    butoane = new ArrayList<>();
    butoane.add(new JButton("Adauga o linie"));
    butoane.add(new JButton("Sterge o linie"));
    butoane.add(new JButton("Adauga o coloana"));
    butoane.add(new JButton("Adauga o coloana"));
AscultatorButoane ab = new AscultatorButoane();
JPanel p = new JPanel(new GridLayout(1,butoane.size(),10,10));
for(int i=0;i<butoane.size();i++)
{butoane.get(i).addActionListener(ab);
p.add(butoane.get(i));
}
JScrollPane jp=new JScrollPane(tabel);
mt = new DefaultTableModel(10,5);
for(int i=0;i<nrLinii;i++)
    for(int j=0;j<nrCol;j++)
        mt.setValueAt(date[i][j],i,j);
mc=tabel.getColumnModel();
tabel.setModel(mt);
add(jp);
add(p,BorderLayout.SOUTH);
mt.setColumnIdentifiers(numeColoane);
tabel.setColumnSelectionAllowed(true);
//AscultatorTabel at=new AscultatorTabel();
//tabel.addMouseListener(at);
AscultatorFocus af=new AscultatorFocus();
tabel.addFocusListener(af);
}
private class AscultatorButoane implements ActionListener{
    private String[] date1;
    public void actionPerformed (ActionEvent e){
        if(e.getSource()==butoane.get(0)){
            date1=new String[5];
            mt.addRow(date1);
            nrLinii++;
        }
        else if(e.getSource()==butoane.get(1)){
            nrLinii--;
            mt.removeRow(nrLinii);
        }
        else if(e.getSource()==butoane.get(2)){
            nrCol++;
            mt.addColumn("Coloana"+nrCol);
        }
        else if(e.getSource()==butoane.get(3)){
        nrCol--;
        TableColumn tc=mc.getColumn(tabel.getSelectedColumn());
        mc.removeColumn(tc);
    }
    }
}
private class AscultatorFocus extends FocusAdapter{
    private int i,j;
    private String sir;
    public void focusLost(FocusEvent e){
        i=tabel.getSelectedRow();
        j=tabel.getSelectedColumn();
        sir=String.valueOf(mt.getValueAt(i,j));
        try{
            Integer.parseInt(sir);

        }catch(NumberFormatException ex){
            mt.setValueAt(0, i,j);
            JOptionPane.showMessageDialog(TabelDinamic.this,"Tv si tastezi: numere intregi");
        }
    }
}



    public static void main(String[] args) {
   JFrame f = new TabelDinamic();
f.setSize(400,200);
f.setVisible(true);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

}