Sampaikanlah Walau Satu Ayat

Defaultnya JTable merender JLable sebagai valuenya, dan JTable secara default pun sudah menyadiakan semacam cara untuk mengganti default renderernya. Dalam artikel ini saya akan memberitahukan bagaimana caranya merender JTextArea ke dalam JTable:

Langkah-langkah:
1. Buat class custom JTextArea
Kelas baru custom JTextArea ini harus extends JTextArea. Lalu buat dua buah syncronized method, method yang pertama adalah method yg bisa menambah action listener dengan parameter ActionListener, method meberikutnya adalah method yang tugasnya menghapus/remove action listener dengan parameter ActionListener
2. Buat class custom JTextArea renderer
Kelas ini tugasnya adalah merender custom JTextArea yang kita buat sebelumnya. Kelas ini harus extends custom JTextArea dan meng-implementasikan interface TableCellRenderer
3. Buat class custom renderernya
Kelas ini nantinya akan banyak kita gunakan
4. Setelah semua class selesai di buat selanjutnya kita akan coba menjalankanya

untuk contoh yang sudah saya buat silahkan download disini

/*
* EachRowEditorExample.java
*
*/

package com.rizka.utils.table;

import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.table.DefaultTableModel;

/**
*
* @author Rizka Dwitama
*/
public class EachRowEditorExample extends JFrame {

public EachRowEditorExample(){
super(”EachRow Editor Example”);

DefaultTableModel dm = new DefaultTableModel();
dm.setDataVector( new Object[][]{{”Name” ,”MyName”},{”Gender”,”Male”}}, new Object[]{”Column1″,”Column2″});

JTable table = new JTable(dm);
JComboBox comboBox = new JComboBox();
comboBox.addItem(”Male”);
comboBox.addItem(”Female”);
EachRowEditor rowEditor = new EachRowEditor();
rowEditor.add(0, new DefaultCellEditor(new JTextField()));// add JTextField in a single cell, row 0, column 1
rowEditor.add(1, new DefaultCellEditor(comboBox));// add JComboBox in a single cell, row 1, column 1
table.getColumn(”Column2″).setCellEditor(rowEditor);

JScrollPane scroll = new JScrollPane(table);
getContentPane().add( scroll );
setSize( 400, 100 );
setVisible(true);
}

public static void main(String[] args) {
EachRowEditorExample frame = new EachRowEditorExample();
frame.addWindowListener( new WindowAdapter(){
@Override
public void windowClosing( WindowEvent e ) {
System.exit(0);
}
});
}
}

afwan gag ada skrinsotnya hehehe…..

Di bahasa pemrograman java anda dapat menambahkan JComboBox, JCheckBox, dan JTextFiled sebagai pengganti editor default dari table. Yah segitu aja dech kata2 bakunya, yang penting ni sourcenya. Contoh ada di bagian ke dua.

/*
* EachRowEditor.java
*
*/

package com.rizka.utils.table;

import java.awt.Component;
import java.util.EventObject;
import java.util.Hashtable;
import javax.swing.DefaultCellEdi

smalem lagi iseng nyari cara buat print preview pake java, alhamdulillah berhasil, nih langsung aja gw kasih sourcenya

/*
* PagePanel.java
*/

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridLayout;
import java.awt.print.PageFormat;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import javax.swing.BorderFactory;
import javax.swing.JPanel;
import javax.swing.border.EtchedBorder;

/**
* Kelas ini fungsinya buat ngerender sesuatu di simpan dalam JPanel yang bisa di print
*
* @author Rizka Dwitama
*/
public class PagePanel extends JPanel implements Printable
{
public static final Dimension A4_SIZE = new Dimension(595, 842);
public static final Dimension A3_SIZE = new Dimension(842, 595 * 2);
public static final Dimension A2_SIZE = new Dimension(595 * 2, 842 * 2);
public static Dimension DEFAULT_SIZE = A4_SIZE;
private GridLayout grid = new GridLayout(4, 2);
public int id = 0;

public PagePanel(int p_number)
{
initComponents();
this.id=p_number;
}

private void initComponents()
{
grid.setHgap(10);
grid.setVgap(10);
this.setMaximumSize(DEFAULT_SIZE);
this.setMinimumSize(DEFAULT_SIZE);
this.setPreferredSize(DEFAULT_SIZE);
this.setBackground(Color.white);
this.setLayout(grid);
this.setBorder(BorderFactory.createEtchedBorder(EtchedBorder.RAISED));
this.setSize(DEFAULT_SIZE);
}

@Override
public void paint(Graphics g)
{
super.paint(g);
g.setColor(Color.BLUE);
g.drawString(”This is page: “+id, 30, 30);
}

@Override
public int print(Graphics g, PageFormat pageFormat, int pageIndex) throws PrinterException
{
Graphics2D g2d = (Graphics2D) g;
g2d.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
this.paint(g2d);
return (PAGE_EXISTS);
}
}

/*
* PagePanel.java
*/

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.print.Book;
import java.awt.print.PageFormat;
import java.awt.print.PrinterJob;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;

/**
* Kelas ini fungsinya buat nampilin kelas PagePanel skalian aplikasi buat ngejalaninnya
*
* @author Rizka Dwitama
*/
public class PrintPreview extends JFrame
{
private static final long serialVersionUID = 1L;
private BorderLayout borderLayout1 = new BorderLayout();
private FlowLayout flow = new FlowLayout();
private Font font = new Font(”Tahoma”, 0, 11);
private int panelsNo = 2;
private Dimension buttonDimension = new Dimension(120, 25);
private JPanel centerPanel = new JPanel();
private JScrollPane scroll = new JScrollPane(centerPanel);
private PagePanel[] previewPanel = null;
private JPanel operationsPanel = new JPanel();
private JButton nextButton = new JButton(”Next”);
private JButton previousButton = new JButton(”Previous”);
private JButton printButton = new JButton(”Print”);

public PrintPreview(int panelsNo)
{
try
{
this.panelsNo = panelsNo;
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setExtendedState(JFrame.MAXIMIZED_BOTH);
previewPanel = new PagePanel[this.panelsNo];
jbInit();
}
catch (Exception e)
{
e.printStackTrace();
}
}

private void jbInit() throws Exception
{
flow.setHgap(20);
flow.setVgap(20);
centerPanel.setLayout(flow);
centerPanel.setBackground(new Color(51, 51, 51));
centerPanel.setPreferredSize(new Dimension(800, panelsNo * (842 + 40)));

for (int i = 0; i < panelsNo; i++)
{
previewPanel[i] = new PagePanel(i + 1);
centerPanel.add(previewPanel[i], null);
}

printButton.setForeground(Color.green.darker());
printButton.addActionListener(new ActionListener()
{

public void actionPerformed(ActionEvent evt)
{
printActionPerformed(evt);
}
});

operationsPanel.setPreferredSize(new Dimension(10, 40));
operationsPanel.add(previousButton, null);
operationsPanel.add(nextButton, null);
operationsPanel.add(printButton, null);

Component comps[] = operationsPanel.getComponents();
for (Component comp : comps)
{
((JButton) comp).setFont(font);
((JButton) comp).setPreferredSize(buttonDimension);
}
this.setTitle(”Print”);
this.getContentPane().setLayout(borderLayout1);
this.setBounds(new Rectangle(10, 10, 650, 930));
this.getContentPane().add(scroll, BorderLayout.CENTER);
this.getContentPane().add(operationsPanel, BorderLayout.NORTH);
}

private void printActionPerformed(java.awt.event.ActionEvent event)
{

PrinterJob printJob = PrinterJob.getPrinterJob();
PageFormat pf = printJob.defaultPage();
pf.setOrientation(PageFormat.PORTRAIT);
Book book = new Book();
// First Page
book.append(previewPanel[0], pf);
// Second Page
book.append(previewPanel[1], pf);

printJob.setPageable(book);

if (printJob.printDialog())
{
try
{
printJob.print();
} catch (Exception ex)
{
ex.printStackTrace();
}
}
}

public static void main(String[] strings)
{
PrintPreview pr = new PrintPreview(2);
pr.setVisible(true);
}
}