Solved

JTable & scroll pane to stretch to fill the panel

Posted on 2010-09-17
2
2,358 Views
Last Modified: 2013-11-23
How do I get the table & scroll pane to stretch to fill the panel as it is resized?
(Resized using the mouse).
package tableStretch;

import java.awt.BorderLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ScrollPaneConstants;
import javax.swing.UIManager;
import javax.swing.WindowConstants;
import javax.swing.border.Border;
import javax.swing.table.DefaultTableModel;

/**
 * JPanel with JTable
 */
public class MyPanel extends JPanel {

	private JTable jTable;

	private DefaultTableModel defaultTableModel;

	private String[] columnNameArray = {"One", "Two", "Three"};

	private Object[][]  dataArray = { 
			{ "", "", ""},
			{ "", "", ""},
			{ "", "", ""},
			{ "", "", ""},
	};

	/**
	 * constructor
	 * 
	 */
	public MyPanel () {

		super();

		defaultTableModel = new DefaultTableModel(dataArray, columnNameArray);

		jTable = new JTable (defaultTableModel); 

		setLayout();

		setListeners();

	}

	/**
	 * set layout of components
	 */
	public void setLayout() {

		jTable.setFillsViewportHeight(true);

		JScrollPane jScrollPane = new JScrollPane(jTable);
		jScrollPane.getViewport().setPreferredSize(jTable.getPreferredSize());

		Border loweredbevel = BorderFactory.createLoweredBevelBorder();
		jScrollPane.setBorder(loweredbevel);

		jScrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED);

		this.add(jScrollPane, BorderLayout.CENTER);
	}

	/**
	 * set listeners
	 */
	public void setListeners() {

	}

	/**
	 * @return defaultTableModel
	 */
	public DefaultTableModel getDefaultTableModel() {
		return defaultTableModel;
	}


	/**
	 * 
	 * @param defaultTableModel
	 */
	public void setDefaultTableModel(DefaultTableModel defaultTableModel) {

		this.defaultTableModel = defaultTableModel;
		jTable.setModel(defaultTableModel);

	}

	/**
	 * 
	 * @param args
	 */
	public static void main(String[] args) {

		try{
			UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
		}
		catch (Exception e){
			e.printStackTrace();
		}

		final MyPanel jPanel = new MyPanel();
		final JFrame frame = new JFrame();
		frame.add(jPanel, BorderLayout.CENTER);
		frame.setTitle("My Panel");
		//		frame.setPreferredSize(new Dimension(500, 250));
		frame.addWindowListener(new WindowAdapter(){
			@Override
			public void windowClosing(WindowEvent e) {
			}
		});

		frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
		frame.setLocation(300, 200);
		frame.pack();
		frame.setVisible(true);

	}

}

Open in new window

0
Comment
Question by:allelopath
  • 2
2 Comments
 
LVL 4

Accepted Solution

by:
jlar310 earned 500 total points
ID: 33703432
in setLayout() add

this.setLayout(new BorderLayout());

You need to give each panel a layout manager before the contraints in the add() calls have any meaning.
0
 
LVL 4

Expert Comment

by:jlar310
ID: 33703474
A little more info: If you don't call setLayout(someLayoutManager), the default layout for a container is FlowLayout.
0

Featured Post

Master Your Team's Linux and Cloud Stack

Come see why top tech companies like Mailchimp and Media Temple use Linux Academy to build their employee training programs.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Protect jar file - windows app 2 53
Basic Java Case or If-Else statement... 3 51
eclipse apache tomcat admin console 52 97
runtime exception 2 29
Update (December 2011): Since this article was published, the things have changed for good for Android native developers. The Sequoyah Project (http://www.eclipse.org/sequoyah/) automates most of the tasks discussed in this article. You can even fin…
Java functions are among the best things for programmers to work with as Java sites can be very easy to read and prepare. Java especially simplifies many processes in the coding industry as it helps integrate many forms of technology and different d…
This tutorial covers a practical example of lazy loading technique and early loading technique in a Singleton Design Pattern.
The viewer will learn how to use and create new code templates in NetBeans IDE 8.0 for Windows.

803 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question