JTable TableModel problem in Java

Question

Hi,

I can show my data in a JTable without a problem, but when I want to filter while my app is running, the JTable is not showing me data changes. I searched for it and found a class named TableModel but I can't write my AbstractTableModel. Can anyone show me how I can do this?

Personelz.Java

package deneme.persistence;

import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.io.Serializable;
import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.Table;
import javax.persistence.Transient;

/**
 *
 * @author İbrahim AKGÜN
 */
@Entity
@Table(name = "PERSONELZ", catalog = "tksDB", schema = "dbo")
@NamedQueries({@NamedQuery(name = "Personelz.findAll", query = "SELECT p FROM Personelz p"), @NamedQuery(name = "Personelz.findByPersonelıd", query = "SELECT p FROM Personelz p WHERE p.personelıd = :personelıd"), @NamedQuery(name = "Personelz.findByAd", query = "SELECT p FROM Personelz p WHERE p.ad = :ad"), @NamedQuery(name = "Personelz.findBySoyad", query = "SELECT p FROM Personelz p WHERE p.soyad = :soyad")})
public class Personelz implements Serializable {
    @Transient
    private PropertyChangeSupport changeSupport = new PropertyChangeSupport(this);
    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    @Basic(optional = false)
    @Column(name = "PERSONELID", nullable = false )
    private Integer personelıd;
    @Column(name = "AD", length = 50)
    private String ad;
    @Column(name = "SOYAD", length = 50)
    private String soyad;
    @Column(name = "YAS")
    private Integer yas;
    public Personelz() {
    }

    public Personelz(Integer personelıd) {
        this.personelıd = personelıd;
    }

    public Integer getPersonelıd() {
        return personelıd;
    }

    public void setPersonelıd(Integer personelıd) {
        this.personelıd = personelıd;
    }

    public String getAd() {
        return ad;
    }

    public void setAd(String ad) {
        String oldAd = this.ad;
        this.ad = ad;
        changeSupport.firePropertyChange("ad", oldAd, ad);
    }

    public String getSoyad() {
        return soyad;
    }

    public void setSoyad(String soyad) {
        String oldSoyad = this.soyad;
        this.soyad = soyad;
        changeSupport.firePropertyChange("soyad", oldSoyad, soyad);
    }
     public Integer getYas() {
        return yas;
    }
public void setYas(Integer yas){
this.yas = yas;

}

TABLEMODEL

 public class TableModel extends AbstractTableModel {

String[] headers;
List<Personelz> personel;
int row;
int column;
Object[][] per;
/** Creates a new instance of TableModel */
    @SuppressWarnings("empty-statement")
public TableModel(List<Personelz> p) {

    this.personel = p;
    column=2;
    row=this.personel.size();

    headers=new String[column];
    headers[0]="AD";
    headers[1]="SOYAD";
    per={p.toArray(),p.toArray()};

}

 public int getColumnCount()
 {
     return column;
 }
 public int getRowCount()
 {
     return row;
 }
 public Object getValueAt(int rowIndex, int kolonindex)
 {

     return per[rowIndex][kolonindex];
 }
 public String getColumnName(int i)
 {
     return headers[i];
 }

Answer 1

I suggest reading this How to Use Tables (from the Java Tutorials Using Swing Components)

Basically the TableModel has to notify the Table of changed data by firing the appropriate Events. See here

Answer 2

You should utilize the TableModelListener interface, which your JTable implements. Once you add your table to your TableModel, call the appropriate fireTableChanged()-type event that AbstractTableModel implements. This should force your JTable to update.

You will still need to implement a method to reset your data in your model when your filter operation returns. it should be in this method that you call your fireTableChanged() event. you also should ensure that you are in the AWT thread when you fire the table changed event.

Answer 3

Hi Ibrahim,

There is a very good library called GlazedLists that makes it a lot simpler to work with lists and tables, including column sorting and row filtering.

Its definitely worth taking a look.

http://publicobject.com/glazedlists/

HTH